42624545 has 4 divisors (see below), whose sum is σ = 51149460. Its totient is φ = 34099632.

The previous prime is 42624539. The next prime is 42624551. The reversal of 42624545 is 54542624.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42624539) and next prime (42624551).

It can be written as a sum of positive squares in 2 ways, for example, as 5121169 + 37503376 = 2263^2 + 6124^2 .

It is a cyclic number.

It is not a de Polignac number, because 42624545 - 2⁸ = 42624289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262450 + ... + 4262459.

It is an arithmetic number, because the mean of its divisors is an integer number (12787365).

Almost surely, 2^42624545 is an apocalyptic number.

It is an amenable number.

42624545 is a deficient number, since it is larger than the sum of its proper divisors (8524915).

42624545 is an equidigital number, since it uses as much as digits as its factorization.

42624545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8524914.

The product of its digits is 38400, while the sum is 32.

The square root of 42624545 is about 6528.7475828064. The cubic root of 42624545 is about 349.3171584549.

The spelling of 42624545 in words is "forty-two million, six hundred twenty-four thousand, five hundred forty-five".