121457403 has 6 divisors (see below), whose sum is σ = 175438484. Its totient is φ = 80971596.

The previous prime is 121457393. The next prime is 121457417. The reversal of 121457403 is 304754121.

It is not a de Polignac number, because 121457403 - 2²¹ = 119360251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121457003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6747625 + ... + 6747642.

Almost surely, 2^121457403 is an apocalyptic number.

121457403 is a deficient number, since it is larger than the sum of its proper divisors (53981081).

121457403 is a wasteful number, since it uses less digits than its factorization.

121457403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495273 (or 13495270 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 121457403 is about 11020.7714339787. The cubic root of 121457403 is about 495.2311990069.

The spelling of 121457403 in words is "one hundred twenty-one million, four hundred fifty-seven thousand, four hundred three".