42621707 has 4 divisors (see below), whose sum is σ = 43205640. Its totient is φ = 42037776.

The previous prime is 42621701. The next prime is 42621727. The reversal of 42621707 is 70712624.

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

It is a cyclic number.

It is not a de Polignac number, because 42621707 - 2⁸ = 42621451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42621707.

It is not an unprimeable number, because it can be changed into a prime (42621701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291857 + ... + 292002.

It is an arithmetic number, because the mean of its divisors is an integer number (10801410).

Almost surely, 2^42621707 is an apocalyptic number.

42621707 is a deficient number, since it is larger than the sum of its proper divisors (583933).

42621707 is an equidigital number, since it uses as much as digits as its factorization.

42621707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583932.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 42621707 is about 6528.5302327553. The cubic root of 42621707 is about 349.3094056128.

The spelling of 42621707 in words is "forty-two million, six hundred twenty-one thousand, seven hundred seven".