254507421 has 24 divisors (see below), whose sum is σ = 395525280. Its totient is φ = 145145952.

The previous prime is 254507417. The next prime is 254507483. The reversal of 254507421 is 124705452.

It is not a de Polignac number, because 254507421 - 2² = 254507417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254507321) 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, 89595 + ... + 92391.

It is an arithmetic number, because the mean of its divisors is an integer number (16480220).

Almost surely, 2^254507421 is an apocalyptic number.

254507421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

254507421 is a deficient number, since it is larger than the sum of its proper divisors (141017859).

254507421 is a wasteful number, since it uses less digits than its factorization.

254507421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433 (or 3426 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 254507421 is about 15953.2887205115. The cubic root of 254507421 is about 633.7239931129.

The spelling of 254507421 in words is "two hundred fifty-four million, five hundred seven thousand, four hundred twenty-one".