42770078 has 8 divisors (see below), whose sum is σ = 69090168. Its totient is φ = 19740024.

The previous prime is 42770069. The next prime is 42770153. The reversal of 42770078 is 87007724.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822476 + ... + 822527.

It is an arithmetic number, because the mean of its divisors is an integer number (8636271).

Almost surely, 2^42770078 is an apocalyptic number.

42770078 is a deficient number, since it is larger than the sum of its proper divisors (26320090).

42770078 is a wasteful number, since it uses less digits than its factorization.

42770078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645018.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 42770078 is about 6539.8836381086. The cubic root of 42770078 is about 349.7142647523.

The spelling of 42770078 in words is "forty-two million, seven hundred seventy thousand, seventy-eight".