42251598 has 32 divisors (see below), whose sum is σ = 97977600. Its totient is φ = 13471128.

The previous prime is 42251591. The next prime is 42251623. The reversal of 42251598 is 89515224.

42251598 is a `hidden beast` number, since 42 + 25 + 1 + 598 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42251591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15768 + ... + 18251.

It is an arithmetic number, because the mean of its divisors is an integer number (3061800).

Almost surely, 2^42251598 is an apocalyptic number.

42251598 is an abundant number, since it is smaller than the sum of its proper divisors (55726002).

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

42251598 is a wasteful number, since it uses less digits than its factorization.

42251598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34053 (or 34047 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 42251598 is about 6500.1229219146. The cubic root of 42251598 is about 348.2953794157.

It can be divided in two parts, 42251 and 598, that added together give a square (42849 = 207²).

The spelling of 42251598 in words is "forty-two million, two hundred fifty-one thousand, five hundred ninety-eight".