121254457 has 4 divisors (see below), whose sum is σ = 121340160. Its totient is φ = 121168756.

The previous prime is 121254449. The next prime is 121254473. The reversal of 121254457 is 754452121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 754452121 = 487 ⋅1549183.

It is a cyclic number.

It is not a de Polignac number, because 121254457 - 2³ = 121254449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121254487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40693 + ... + 43570.

It is an arithmetic number, because the mean of its divisors is an integer number (30335040).

Almost surely, 2^121254457 is an apocalyptic number.

It is an amenable number.

121254457 is a deficient number, since it is larger than the sum of its proper divisors (85703).

121254457 is an equidigital number, since it uses as much as digits as its factorization.

121254457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85702.

The product of its digits is 11200, while the sum is 31.

The square root of 121254457 is about 11011.5601528575. The cubic root of 121254457 is about 494.9552141231.

The spelling of 121254457 in words is "one hundred twenty-one million, two hundred fifty-four thousand, four hundred fifty-seven".