121273455 has 16 divisors (see below), whose sum is σ = 194181120. Its totient is φ = 64631328.

The previous prime is 121273441. The next prime is 121273463. The reversal of 121273455 is 554372121.

It is not a de Polignac number, because 121273455 - 2⁵ = 121273423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28986 + ... + 32904.

It is an arithmetic number, because the mean of its divisors is an integer number (12136320).

Almost surely, 2^121273455 is an apocalyptic number.

121273455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121273455 is a deficient number, since it is larger than the sum of its proper divisors (72907665).

121273455 is a wasteful number, since it uses less digits than its factorization.

121273455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990.

The product of its digits is 8400, while the sum is 30.

The square root of 121273455 is about 11012.4227579584. The cubic root of 121273455 is about 494.9810624323.

The spelling of 121273455 in words is "one hundred twenty-one million, two hundred seventy-three thousand, four hundred fifty-five".