122897970 has 96 divisors (see below), whose sum is σ = 359154432. Its totient is φ = 28930176.

The previous prime is 122897941. The next prime is 122897987. The reversal of 122897970 is 79798221.

It is a super-2 number, since 2×122897970² = 30207822060241800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 24627 + ... + 29193.

It is an arithmetic number, because the mean of its divisors is an integer number (3741192).

Almost surely, 2^122897970 is an apocalyptic number.

122897970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122897970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179577216).

122897970 is an abundant number, since it is smaller than the sum of its proper divisors (236256462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122897970 is a wasteful number, since it uses less digits than its factorization.

122897970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616 (or 4613 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 122897970 is about 11085.9356844607. The cubic root of 122897970 is about 497.1814345665.

It can be divided in two parts, 12 and 2897970, that added together give a palindrome (2897982).

The spelling of 122897970 in words is "one hundred twenty-two million, eight hundred ninety-seven thousand, nine hundred seventy".