121426390 has 8 divisors (see below), whose sum is σ = 218567520. Its totient is φ = 48570552.

The previous prime is 121426387. The next prime is 121426421. The reversal of 121426390 is 93624121.

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, 6071310 + ... + 6071329.

It is an arithmetic number, because the mean of its divisors is an integer number (27320940).

Almost surely, 2^121426390 is an apocalyptic number.

121426390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121426390 is a deficient number, since it is larger than the sum of its proper divisors (97141130).

121426390 is a wasteful number, since it uses less digits than its factorization.

121426390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12142646.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 121426390 is about 11019.3643192337. The cubic root of 121426390 is about 495.1890445499.

The spelling of 121426390 in words is "one hundred twenty-one million, four hundred twenty-six thousand, three hundred ninety".