421402514 has 24 divisors (see below), whose sum is σ = 686067732. Its totient is φ = 194039040.

The previous prime is 421402489. The next prime is 421402519. The reversal of 421402514 is 415204124.

It can be written as a sum of positive squares in 6 ways, for example, as 537289 + 420865225 = 733^2 + 20515^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421402514.

It is not an unprimeable number, because it can be changed into a prime (421402519) 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, 174902 + ... + 177294.

Almost surely, 2^421402514 is an apocalyptic number.

421402514 is a deficient number, since it is larger than the sum of its proper divisors (264665218).

421402514 is a wasteful number, since it uses less digits than its factorization.

421402514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942 (or 2929 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 421402514 is about 20528.0908513188. The cubic root of 421402514 is about 749.7199037041.

Adding to 421402514 its reverse (415204124), we get a palindrome (836606638).

The spelling of 421402514 in words is "four hundred twenty-one million, four hundred two thousand, five hundred fourteen".