42204537 has 8 divisors (see below), whose sum is σ = 62525280. Its totient is φ = 28136340.

The previous prime is 42204527. The next prime is 42204553. The reversal of 42204537 is 73540224.

It is not a de Polignac number, because 42204537 - 2¹² = 42200441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1563131 = 42204537 / (4 + 2 + 2 + 0 + 4 + 5 + 3 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 42204537.

It is not an unprimeable number, because it can be changed into a prime (42204527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781539 + ... + 781592.

It is an arithmetic number, because the mean of its divisors is an integer number (7815660).

Almost surely, 2^42204537 is an apocalyptic number.

It is an amenable number.

42204537 is a deficient number, since it is larger than the sum of its proper divisors (20320743).

42204537 is a wasteful number, since it uses less digits than its factorization.

42204537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563140 (or 1563134 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 42204537 is about 6496.5019048716. The cubic root of 42204537 is about 348.1660176951.

The spelling of 42204537 in words is "forty-two million, two hundred four thousand, five hundred thirty-seven".