42357636 has 18 divisors (see below), whose sum is σ = 107070782. Its totient is φ = 14119200.

The previous prime is 42357619. The next prime is 42357643. The reversal of 42357636 is 63675324.

42357636 is nontrivially palindromic in base 11.

It can be written as a sum of positive squares in only one way, i.e., 41990400 + 367236 = 6480^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1176601 = 42357636 / (4 + 2 + 3 + 5 + 7 + 6 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 42357636.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588265 + ... + 588336.

Almost surely, 2^42357636 is an apocalyptic number.

It is an amenable number.

42357636 is an abundant number, since it is smaller than the sum of its proper divisors (64713146).

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

42357636 is a wasteful number, since it uses less digits than its factorization.

42357636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176611 (or 1176606 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 42357636 is about 6508.2744256830. The cubic root of 42357636 is about 348.5865060153.

The spelling of 42357636 in words is "forty-two million, three hundred fifty-seven thousand, six hundred thirty-six".