121407273 has 24 divisors (see below), whose sum is σ = 193469640. Its totient is φ = 72887040.

The previous prime is 121407257. The next prime is 121407329. The reversal of 121407273 is 372704121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 121104 + 121286169 = 348^2 + 11013^2 .

It is not a de Polignac number, because 121407273 - 2⁴ = 121407257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121407203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7858 + ... + 17451.

It is an arithmetic number, because the mean of its divisors is an integer number (8061235).

Almost surely, 2^121407273 is an apocalyptic number.

121407273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121407273 is a deficient number, since it is larger than the sum of its proper divisors (72062367).

121407273 is a wasteful number, since it uses less digits than its factorization.

121407273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25369 (or 25366 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 121407273 is about 11018.4968575573. The cubic root of 121407273 is about 495.1630561691.

The spelling of 121407273 in words is "one hundred twenty-one million, four hundred seven thousand, two hundred seventy-three".