2045420120 has 32 divisors (see below), whose sum is σ = 4612219920. Its totient is φ = 816385920.

The previous prime is 2045420089. The next prime is 2045420123. The reversal of 2045420120 is 210245402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2045420092 and 2045420101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045420123) 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, 37022 + ... + 73901.

Almost surely, 2^2045420120 is an apocalyptic number.

2045420120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045420120 is an abundant number, since it is smaller than the sum of its proper divisors (2566799800).

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

2045420120 is a wasteful number, since it uses less digits than its factorization.

2045420120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111395 (or 111391 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2045420120 is about 45226.3210973433. The cubic root of 2045420120 is about 1269.3873747701.

Adding to 2045420120 its reverse (210245402), we get a palindrome (2255665522).

The spelling of 2045420120 in words is "two billion, forty-five million, four hundred twenty thousand, one hundred twenty".