122942689 has 8 divisors (see below), whose sum is σ = 123950592. Its totient is φ = 121938960.

The previous prime is 122942653. The next prime is 122942693. The reversal of 122942689 is 986249221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122942689 - 2¹¹ = 122940641 is a prime.

It is a super-2 number, since 2×122942689² = 30229809557101442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122942089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83887 + ... + 85339.

It is an arithmetic number, because the mean of its divisors is an integer number (15493824).

Almost surely, 2^122942689 is an apocalyptic number.

It is an amenable number.

122942689 is a deficient number, since it is larger than the sum of its proper divisors (1007903).

122942689 is a wasteful number, since it uses less digits than its factorization.

122942689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087.

The product of its digits is 124416, while the sum is 43.

The square root of 122942689 is about 11087.9524259441. The cubic root of 122942689 is about 497.2417305460.

The spelling of 122942689 in words is "one hundred twenty-two million, nine hundred forty-two thousand, six hundred eighty-nine".