420492074 has 4 divisors (see below), whose sum is σ = 630738114. Its totient is φ = 210246036.

The previous prime is 420492073. The next prime is 420492101. The reversal of 420492074 is 470294024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 404291449 + 16200625 = 20107^2 + 4025^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 420492074.

It is not an unprimeable number, because it can be changed into a prime (420492073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105123017 + ... + 105123020.

Almost surely, 2^420492074 is an apocalyptic number.

420492074 is a deficient number, since it is larger than the sum of its proper divisors (210246040).

420492074 is a wasteful number, since it uses less digits than its factorization.

420492074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210246039.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 420492074 is about 20505.9033939010. The cubic root of 420492074 is about 749.1795911960.

The spelling of 420492074 in words is "four hundred twenty million, four hundred ninety-two thousand, seventy-four".