420511078 has 64 divisors (see below), whose sum is σ = 748440000. Its totient is φ = 175440384.

The previous prime is 420511073. The next prime is 420511109. The reversal of 420511078 is 870115024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420511073) 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, 2134476 + ... + 2134672.

It is an arithmetic number, because the mean of its divisors is an integer number (11694375).

Almost surely, 2^420511078 is an apocalyptic number.

420511078 is a deficient number, since it is larger than the sum of its proper divisors (327928922).

420511078 is a wasteful number, since it uses less digits than its factorization.

420511078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 420511078 is about 20506.3667674213. The cubic root of 420511078 is about 749.1908773338.

The spelling of 420511078 in words is "four hundred twenty million, five hundred eleven thousand, seventy-eight".