123242422440 has 64 divisors (see below), whose sum is σ = 370368250560. Its totient is φ = 32807669760.

The previous prime is 123242422379. The next prime is 123242422477. The reversal of 123242422440 is 44224242321.

It is a happy number.

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 = 123242422398 and 123242422407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820726 + ... + 959205.

It is an arithmetic number, because the mean of its divisors is an integer number (5787003915).

Almost surely, 2^123242422440 is an apocalyptic number.

123242422440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123242422440 is an abundant number, since it is smaller than the sum of its proper divisors (247125828120).

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

123242422440 is a wasteful number, since it uses less digits than its factorization.

123242422440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780522 (or 1780518 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 123242422440 its reverse (44224242321), we get a palindrome (167466664761).

The spelling of 123242422440 in words is "one hundred twenty-three billion, two hundred forty-two million, four hundred twenty-two thousand, four hundred forty".