121391796 has 24 divisors (see below), whose sum is σ = 293015520. Its totient is φ = 39068512.

The previous prime is 121391771. The next prime is 121391797. The reversal of 121391796 is 697193121.

It is a happy number.

It is a super-2 number, since 2×121391796² = 29471936272211232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121391797) 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, 174066 + ... + 174761.

It is an arithmetic number, because the mean of its divisors is an integer number (12208980).

Almost surely, 2^121391796 is an apocalyptic number.

It is an amenable number.

121391796 is an abundant number, since it is smaller than the sum of its proper divisors (171623724).

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

121391796 is a wasteful number, since it uses less digits than its factorization.

121391796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348863 (or 348861 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 121391796 is about 11017.7945161452. The cubic root of 121391796 is about 495.1420141450.

The spelling of 121391796 in words is "one hundred twenty-one million, three hundred ninety-one thousand, seven hundred ninety-six".