42503172 has 24 divisors (see below), whose sum is σ = 103486656. Its totient is φ = 13551648.

The previous prime is 42503147. The next prime is 42503177. The reversal of 42503172 is 27130524.

It is a super-3 number, since 3×42503172³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42503177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76723 + ... + 77274.

It is an arithmetic number, because the mean of its divisors is an integer number (4311944).

Almost surely, 2^42503172 is an apocalyptic number.

It is an amenable number.

42503172 is an abundant number, since it is smaller than the sum of its proper divisors (60983484).

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

42503172 is a wasteful number, since it uses less digits than its factorization.

42503172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154027 (or 154025 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 42503172 is about 6519.4456819579. The cubic root of 42503172 is about 348.9852841199.

Adding to 42503172 its reverse (27130524), we get a palindrome (69633696).

The spelling of 42503172 in words is "forty-two million, five hundred three thousand, one hundred seventy-two".