42451232120 has 32 divisors (see below), whose sum is σ = 104198479920. Its totient is φ = 15436811520.

The previous prime is 42451232119. The next prime is 42451232137. The reversal of 42451232120 is 2123215424.

It is a super-2 number, since 2×42451232120² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42451232120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48239597 + ... + 48240476.

Almost surely, 2^42451232120 is an apocalyptic number.

42451232120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42451232120 is an abundant number, since it is smaller than the sum of its proper divisors (61747247800).

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

42451232120 is a wasteful number, since it uses less digits than its factorization.

42451232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96480095 (or 96480091 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 42451232120 its reverse (2123215424), we get a palindrome (44574447544).

The spelling of 42451232120 in words is "forty-two billion, four hundred fifty-one million, two hundred thirty-two thousand, one hundred twenty".