477215642 has 4 divisors (see below), whose sum is σ = 715823466. Its totient is φ = 238607820.

The previous prime is 477215639. The next prime is 477215663. The reversal of 477215642 is 246512774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246512774 = 2 ⋅123256387.

It can be written as a sum of positive squares in only one way, i.e., 475196401 + 2019241 = 21799^2 + 1421^2 .

It is a junction number, because it is equal to n+sod(n) for n = 477215596 and 477215605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119303909 + ... + 119303912.

Almost surely, 2^477215642 is an apocalyptic number.

477215642 is a deficient number, since it is larger than the sum of its proper divisors (238607824).

477215642 is a wasteful number, since it uses less digits than its factorization.

477215642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238607823.

The product of its digits is 94080, while the sum is 38.

The square root of 477215642 is about 21845.2658944678. The cubic root of 477215642 is about 781.4566479525.

The spelling of 477215642 in words is "four hundred seventy-seven million, two hundred fifteen thousand, six hundred forty-two".