42378454 has 8 divisors (see below), whose sum is σ = 65759760. Its totient is φ = 20458536.

The previous prime is 42378451. The next prime is 42378463. The reversal of 42378454 is 45487324.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42378451) 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, 365274 + ... + 365389.

It is an arithmetic number, because the mean of its divisors is an integer number (8219970).

Almost surely, 2^42378454 is an apocalyptic number.

42378454 is a deficient number, since it is larger than the sum of its proper divisors (23381306).

42378454 is a wasteful number, since it uses less digits than its factorization.

42378454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730694.

The product of its digits is 107520, while the sum is 37.

The square root of 42378454 is about 6509.8735778815. The cubic root of 42378454 is about 348.6436046167.

The spelling of 42378454 in words is "forty-two million, three hundred seventy-eight thousand, four hundred fifty-four".