42432121400 has 48 divisors (see below), whose sum is σ = 102056581800. Its totient is φ = 16387575680.

The previous prime is 42432121357. The next prime is 42432121409. The reversal of 42432121400 is 412123424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42432121409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3652142 + ... + 3663741.

Almost surely, 2^42432121400 is an apocalyptic number.

42432121400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42432121400 is an abundant number, since it is smaller than the sum of its proper divisors (59624460400).

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

42432121400 is a wasteful number, since it uses less digits than its factorization.

42432121400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7315928 (or 7315919 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 42432121400 its reverse (412123424), we get a palindrome (42844244824).

The spelling of 42432121400 in words is "forty-two billion, four hundred thirty-two million, one hundred twenty-one thousand, four hundred".