42627997 has 2 divisors, whose sum is σ = 42627998. Its totient is φ = 42627996.

The previous prime is 42627983. The next prime is 42628021. The reversal of 42627997 is 79972624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26071236 + 16556761 = 5106^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 42627997 - 2²³ = 34239389 is a prime.

It is a super-2 number, since 2×42627997² = 3634292256464018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42627917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21313998 + 21313999.

It is an arithmetic number, because the mean of its divisors is an integer number (21313999).

Almost surely, 2^42627997 is an apocalyptic number.

It is an amenable number.

42627997 is a deficient number, since it is larger than the sum of its proper divisors (1).

42627997 is an equidigital number, since it uses as much as digits as its factorization.

42627997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 42627997 is about 6529.0119466884. The cubic root of 42627997 is about 349.3265881570.

The spelling of 42627997 in words is "forty-two million, six hundred twenty-seven thousand, nine hundred ninety-seven".