42780507 has 32 divisors (see below), whose sum is σ = 72866304. Its totient is φ = 21676800.

The previous prime is 42780503. The next prime is 42780523. The reversal of 42780507 is 70508724.

It is not a de Polignac number, because 42780507 - 2² = 42780503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42780503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7213 + ... + 11729.

It is an arithmetic number, because the mean of its divisors is an integer number (2277072).

Almost surely, 2^42780507 is an apocalyptic number.

42780507 is a deficient number, since it is larger than the sum of its proper divisors (30085797).

42780507 is a wasteful number, since it uses less digits than its factorization.

42780507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 42780507 is about 6540.6809278545. The cubic root of 42780507 is about 349.7426870656.

The spelling of 42780507 in words is "forty-two million, seven hundred eighty thousand, five hundred seven".