381542434 has 32 divisors (see below), whose sum is σ = 715954176. Its totient is φ = 148461120.

The previous prime is 381542411. The next prime is 381542437. The reversal of 381542434 is 434245183.

It is a self number, because there is not a number n which added to its sum of digits gives 381542434.

It is not an unprimeable number, because it can be changed into a prime (381542437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6082 + ... + 28285.

It is an arithmetic number, because the mean of its divisors is an integer number (22373568).

Almost surely, 2^381542434 is an apocalyptic number.

381542434 is a deficient number, since it is larger than the sum of its proper divisors (334411742).

381542434 is a wasteful number, since it uses less digits than its factorization.

381542434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34450.

The product of its digits is 46080, while the sum is 34.

The square root of 381542434 is about 19533.1112217179. Note that the first 3 decimals coincide. The cubic root of 381542434 is about 725.2943293253.

The spelling of 381542434 in words is "three hundred eighty-one million, five hundred forty-two thousand, four hundred thirty-four".