121257453 has 8 divisors (see below), whose sum is σ = 163891648. Its totient is φ = 79730784.

The previous prime is 121257431. The next prime is 121257491. The reversal of 121257453 is 354752121.

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

It is not a de Polignac number, because 121257453 - 2¹⁸ = 120995309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121257453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121257553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276625 + ... + 277062.

It is an arithmetic number, because the mean of its divisors is an integer number (20486456).

Almost surely, 2^121257453 is an apocalyptic number.

It is an amenable number.

121257453 is a deficient number, since it is larger than the sum of its proper divisors (42634195).

121257453 is an equidigital number, since it uses as much as digits as its factorization.

121257453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553763.

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

The square root of 121257453 is about 11011.6961908691. The cubic root of 121257453 is about 494.9592906017.

The spelling of 121257453 in words is "one hundred twenty-one million, two hundred fifty-seven thousand, four hundred fifty-three".