42919525 has 12 divisors (see below), whose sum is σ = 58058784. Its totient is φ = 31214000.

The previous prime is 42919511. The next prime is 42919553. The reversal of 42919525 is 52591924.

42919525 = 250² + 251² + ... + 524².

It is not a de Polignac number, because 42919525 - 2⁹ = 42919013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77761 + ... + 78310.

It is an arithmetic number, because the mean of its divisors is an integer number (4838232).

Almost surely, 2^42919525 is an apocalyptic number.

It is an amenable number.

42919525 is a deficient number, since it is larger than the sum of its proper divisors (15139259).

42919525 is a wasteful number, since it uses less digits than its factorization.

42919525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156092 (or 156087 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 42919525 is about 6551.2994894143. The cubic root of 42919525 is about 350.1211145471.

The spelling of 42919525 in words is "forty-two million, nine hundred nineteen thousand, five hundred twenty-five".