378912642 has 16 divisors (see below), whose sum is σ = 758214432. Its totient is φ = 126239360.

The previous prime is 378912623. The next prime is 378912647. The reversal of 378912642 is 246219873.

It is a junction number, because it is equal to n+sod(n) for n = 378912594 and 378912603.

It is not an unprimeable number, because it can be changed into a prime (378912647) 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, 2688 + ... + 27659.

It is an arithmetic number, because the mean of its divisors is an integer number (47388402).

Almost surely, 2^378912642 is an apocalyptic number.

378912642 is an abundant number, since it is smaller than the sum of its proper divisors (379301790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378912642 is a wasteful number, since it uses less digits than its factorization.

378912642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32433.

The product of its digits is 145152, while the sum is 42.

The square root of 378912642 is about 19465.6785651053. The cubic root of 378912642 is about 723.6241155472.

The spelling of 378912642 in words is "three hundred seventy-eight million, nine hundred twelve thousand, six hundred forty-two".