42556535 has 16 divisors (see below), whose sum is σ = 58473792. Its totient is φ = 29126400.

The previous prime is 42556499. The next prime is 42556567. The reversal of 42556535 is 53565524.

It is not a de Polignac number, because 42556535 - 2¹⁶ = 42490999 is a prime.

It is a super-2 number, since 2×42556535² = 3622117342412450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42556495 and 42556504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27995 + ... + 29475.

It is an arithmetic number, because the mean of its divisors is an integer number (3654612).

Almost surely, 2^42556535 is an apocalyptic number.

42556535 is a deficient number, since it is larger than the sum of its proper divisors (15917257).

42556535 is a wasteful number, since it uses less digits than its factorization.

42556535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2314.

The product of its digits is 90000, while the sum is 35.

The square root of 42556535 is about 6523.5370007382. The cubic root of 42556535 is about 349.1312741135.

The spelling of 42556535 in words is "forty-two million, five hundred fifty-six thousand, five hundred thirty-five".