42622501 has 2 divisors, whose sum is σ = 42622502. Its totient is φ = 42622500.

The previous prime is 42622499. The next prime is 42622511. The reversal of 42622501 is 10522624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32376100 + 10246401 = 5690^2 + 3201^2 .

It is a cyclic number.

It is not a de Polignac number, because 42622501 - 2¹ = 42622499 is a prime.

Together with 42622499, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42622511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21311250 + 21311251.

It is an arithmetic number, because the mean of its divisors is an integer number (21311251).

Almost surely, 2^42622501 is an apocalyptic number.

It is an amenable number.

42622501 is a deficient number, since it is larger than the sum of its proper divisors (1).

42622501 is an equidigital number, since it uses as much as digits as its factorization.

42622501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 42622501 is about 6528.5910424838. The cubic root of 42622501 is about 349.3115746950.

The spelling of 42622501 in words is "forty-two million, six hundred twenty-two thousand, five hundred one".