120423433440 has 48 divisors (see below), whose sum is σ = 379333816848. Its totient is φ = 32112915456.

The previous prime is 120423433439. The next prime is 120423433441. The reversal of 120423433440 is 44334324021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120423433439) and next prime (120423433441).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×120423433440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 120423433398 and 120423433407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120423433441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125440597 + ... + 125441556.

It is an arithmetic number, because the mean of its divisors is an integer number (7902787851).

Almost surely, 2^120423433440 is an apocalyptic number.

120423433440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120423433440 is an abundant number, since it is smaller than the sum of its proper divisors (258910383408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120423433440 is a wasteful number, since it uses less digits than its factorization.

120423433440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250882171 (or 250882163 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 120423433440 its reverse (44334324021), we get a palindrome (164757757461).

The spelling of 120423433440 in words is "one hundred twenty billion, four hundred twenty-three million, four hundred thirty-three thousand, four hundred forty".