381293421 has 24 divisors (see below), whose sum is σ = 533470080. Its totient is φ = 242196864.

The previous prime is 381293401. The next prime is 381293443. The reversal of 381293421 is 124392183.

It is not a de Polignac number, because 381293421 - 2⁷ = 381293293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381293401) 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, 198361 + ... + 200273.

It is an arithmetic number, because the mean of its divisors is an integer number (22227920).

Almost surely, 2^381293421 is an apocalyptic number.

It is an amenable number.

381293421 is a deficient number, since it is larger than the sum of its proper divisors (152176659).

381293421 is a wasteful number, since it uses less digits than its factorization.

381293421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2024 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 381293421 is about 19526.7360559823. The cubic root of 381293421 is about 725.1365076292.

The spelling of 381293421 in words is "three hundred eighty-one million, two hundred ninety-three thousand, four hundred twenty-one".