122704531 has 2 divisors, whose sum is σ = 122704532. Its totient is φ = 122704530.

The previous prime is 122704511. The next prime is 122704559. The reversal of 122704531 is 135407221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122704531 - 2⁹ = 122704019 is a prime.

It is a super-2 number, since 2×122704531² = 30112803855859922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122704496 and 122704505.

It is not a weakly prime, because it can be changed into another prime (122704501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61352265 + 61352266.

It is an arithmetic number, because the mean of its divisors is an integer number (61352266).

Almost surely, 2^122704531 is an apocalyptic number.

122704531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122704531 is an equidigital number, since it uses as much as digits as its factorization.

122704531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 122704531 is about 11077.2077257764. The cubic root of 122704531 is about 496.9204463053.

The spelling of 122704531 in words is "one hundred twenty-two million, seven hundred four thousand, five hundred thirty-one".