122637406 has 4 divisors (see below), whose sum is σ = 183956112. Its totient is φ = 61318702.

The previous prime is 122637401. The next prime is 122637407. The reversal of 122637406 is 604736221.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×122637406³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122637401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30659350 + ... + 30659353.

It is an arithmetic number, because the mean of its divisors is an integer number (45989028).

Almost surely, 2^122637406 is an apocalyptic number.

122637406 is a deficient number, since it is larger than the sum of its proper divisors (61318706).

122637406 is an equidigital number, since it uses as much as digits as its factorization.

122637406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61318705.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 122637406 is about 11074.1774412369. The cubic root of 122637406 is about 496.8298170272.

The spelling of 122637406 in words is "one hundred twenty-two million, six hundred thirty-seven thousand, four hundred six".