42505044 has 24 divisors (see below), whose sum is σ = 100806048. Its totient is φ = 13935840.

The previous prime is 42505031. The next prime is 42505051. The reversal of 42505044 is 44050524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28302 + ... + 29765.

It is an arithmetic number, because the mean of its divisors is an integer number (4200252).

Almost surely, 2^42505044 is an apocalyptic number.

It is an amenable number.

42505044 is an abundant number, since it is smaller than the sum of its proper divisors (58301004).

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

42505044 is a wasteful number, since it uses less digits than its factorization.

42505044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58135 (or 58133 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42505044 is about 6519.5892508654. The cubic root of 42505044 is about 348.9904075874.

Adding to 42505044 its reverse (44050524), we get a palindrome (86555568).

The spelling of 42505044 in words is "forty-two million, five hundred five thousand, forty-four".