378657542 has 8 divisors (see below), whose sum is σ = 573842136. Its totient is φ = 187376832.

The previous prime is 378657481. The next prime is 378657547. The reversal of 378657542 is 245756873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×378657542² = 286763068226963528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378657547) 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, 975728 + ... + 976115.

It is an arithmetic number, because the mean of its divisors is an integer number (71730267).

Almost surely, 2^378657542 is an apocalyptic number.

378657542 is a deficient number, since it is larger than the sum of its proper divisors (195184594).

378657542 is a wasteful number, since it uses less digits than its factorization.

378657542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951942.

The product of its digits is 1411200, while the sum is 47.

The square root of 378657542 is about 19459.1249032427. The cubic root of 378657542 is about 723.4616876478.

The spelling of 378657542 in words is "three hundred seventy-eight million, six hundred fifty-seven thousand, five hundred forty-two".