42634961 has 2 divisors, whose sum is σ = 42634962. Its totient is φ = 42634960.

The previous prime is 42634919. The next prime is 42635027. The reversal of 42634961 is 16943624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22743361 + 19891600 = 4769^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 42634961 - 2⁶ = 42634897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_2583827 and since 42634961 and 2583827 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (42634261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21317480 + 21317481.

It is an arithmetic number, because the mean of its divisors is an integer number (21317481).

Almost surely, 2^42634961 is an apocalyptic number.

It is an amenable number.

42634961 is a deficient number, since it is larger than the sum of its proper divisors (1).

42634961 is an equidigital number, since it uses as much as digits as its factorization.

42634961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 42634961 is about 6529.5452368446. The cubic root of 42634961 is about 349.3456099116.

The spelling of 42634961 in words is "forty-two million, six hundred thirty-four thousand, nine hundred sixty-one".