421002650 has 24 divisors (see below), whose sum is σ = 804232380. Its totient is φ = 163848960.

The previous prime is 421002623. The next prime is 421002653. The reversal of 421002650 is 56200124.

It is a happy number.

421002650 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 114297481 + 306705169 = 10691^2 + 17513^2 .

It is not an unprimeable number, because it can be changed into a prime (421002653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111935 + ... + 115634.

Almost surely, 2^421002650 is an apocalyptic number.

421002650 is a deficient number, since it is larger than the sum of its proper divisors (383229730).

421002650 is a wasteful number, since it uses less digits than its factorization.

421002650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227618 (or 227613 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 421002650 is about 20518.3491051303. The cubic root of 421002650 is about 749.4826951281.

Adding to 421002650 its reverse (56200124), we get a palindrome (477202774).

The spelling of 421002650 in words is "four hundred twenty-one million, two thousand, six hundred fifty".