122445431 has 4 divisors (see below), whose sum is σ = 123657864. Its totient is φ = 121233000.

The previous prime is 122445413. The next prime is 122445457. The reversal of 122445431 is 134544221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122445431 is a prime.

It is a super-2 number, since 2×122445431² = 29985767145551522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122445431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122445131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606065 + ... + 606266.

It is an arithmetic number, because the mean of its divisors is an integer number (30914466).

Almost surely, 2^122445431 is an apocalyptic number.

122445431 is a deficient number, since it is larger than the sum of its proper divisors (1212433).

122445431 is a wasteful number, since it uses less digits than its factorization.

122445431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212432.

The product of its digits is 3840, while the sum is 26.

The square root of 122445431 is about 11065.5063598554. The cubic root of 122445431 is about 496.5704379931.

Adding to 122445431 its reverse (134544221), we get a palindrome (256989652).

The spelling of 122445431 in words is "one hundred twenty-two million, four hundred forty-five thousand, four hundred thirty-one".