42378371 has 8 divisors (see below), whose sum is σ = 49155840. Its totient is φ = 35781768.

The previous prime is 42378359. The next prime is 42378373. The reversal of 42378371 is 17387324.

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

It is a cyclic number.

It is not a de Polignac number, because 42378371 - 2⁶ = 42378307 is a prime.

It is a super-2 number, since 2×42378371² = 3591852657227282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42378373) 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, 44711 + ... + 45648.

It is an arithmetic number, because the mean of its divisors is an integer number (6144480).

Almost surely, 2^42378371 is an apocalyptic number.

42378371 is a deficient number, since it is larger than the sum of its proper divisors (6777469).

42378371 is an equidigital number, since it uses as much as digits as its factorization.

42378371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90433.

The product of its digits is 28224, while the sum is 35.

The square root of 42378371 is about 6509.8672029466. The cubic root of 42378371 is about 348.6433770055.

The spelling of 42378371 in words is "forty-two million, three hundred seventy-eight thousand, three hundred seventy-one".