121435456790 has 8 divisors (see below), whose sum is σ = 218583822240. Its totient is φ = 48574182712.

The previous prime is 121435456759. The next prime is 121435456817. The reversal of 121435456790 is 97654534121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6071772830 + ... + 6071772849.

It is an arithmetic number, because the mean of its divisors is an integer number (27322977780).

Almost surely, 2^121435456790 is an apocalyptic number.

121435456790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121435456790 is a deficient number, since it is larger than the sum of its proper divisors (97148365450).

121435456790 is a wasteful number, since it uses less digits than its factorization.

121435456790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12143545686.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 121435456790 in words is "one hundred twenty-one billion, four hundred thirty-five million, four hundred fifty-six thousand, seven hundred ninety".