42607637 has 2 divisors, whose sum is σ = 42607638. Its totient is φ = 42607636.

The previous prime is 42607613. The next prime is 42607639. The reversal of 42607637 is 73670624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32103556 + 10504081 = 5666^2 + 3241^2 .

It is a cyclic number.

It is not a de Polignac number, because 42607637 - 2⁶ = 42607573 is a prime.

Together with 42607639, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42607597 and 42607606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42607639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21303818 + 21303819.

It is an arithmetic number, because the mean of its divisors is an integer number (21303819).

Almost surely, 2^42607637 is an apocalyptic number.

It is an amenable number.

42607637 is a deficient number, since it is larger than the sum of its proper divisors (1).

42607637 is an equidigital number, since it uses as much as digits as its factorization.

42607637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 42607637 is about 6527.4525658943. The cubic root of 42607637 is about 349.2709641347.

The spelling of 42607637 in words is "forty-two million, six hundred seven thousand, six hundred thirty-seven".