420651106 has 4 divisors (see below), whose sum is σ = 630976662. Its totient is φ = 210325552.

The previous prime is 420651083. The next prime is 420651109. The reversal of 420651106 is 601156024.

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., 318943881 + 101707225 = 17859^2 + 10085^2 .

It is not an unprimeable number, because it can be changed into a prime (420651109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105162775 + ... + 105162778.

Almost surely, 2^420651106 is an apocalyptic number.

420651106 is a deficient number, since it is larger than the sum of its proper divisors (210325556).

420651106 is a wasteful number, since it uses less digits than its factorization.

420651106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210325555.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 420651106 is about 20509.7807399299. The cubic root of 420651106 is about 749.2740269925.

The spelling of 420651106 in words is "four hundred twenty million, six hundred fifty-one thousand, one hundred six".