42372156 has 12 divisors (see below), whose sum is σ = 98868392. Its totient is φ = 14124048.

The previous prime is 42372151. The next prime is 42372163. The reversal of 42372156 is 65127324.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42372151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1765495 + ... + 1765518.

Almost surely, 2^42372156 is an apocalyptic number.

It is an amenable number.

42372156 is an abundant number, since it is smaller than the sum of its proper divisors (56496236).

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

42372156 is a wasteful number, since it uses less digits than its factorization.

42372156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531020 (or 3531018 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 42372156 is about 6509.3898331564. The cubic root of 42372156 is about 348.6263327408.

The spelling of 42372156 in words is "forty-two million, three hundred seventy-two thousand, one hundred fifty-six".