122737990 has 32 divisors (see below), whose sum is σ = 229029120. Its totient is φ = 47308800.

The previous prime is 122737987. The next prime is 122737997. The reversal of 122737990 is 99737221.

It is a super-2 number, since 2×122737990² = 30129228378480200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122737997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86406 + ... + 87814.

It is an arithmetic number, because the mean of its divisors is an integer number (7157160).

Almost surely, 2^122737990 is an apocalyptic number.

122737990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122737990 is a deficient number, since it is larger than the sum of its proper divisors (106291130).

122737990 is a wasteful number, since it uses less digits than its factorization.

122737990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 122737990 is about 11078.7178861094. The cubic root of 122737990 is about 496.9656088598.

The spelling of 122737990 in words is "one hundred twenty-two million, seven hundred thirty-seven thousand, nine hundred ninety".