421002265 has 16 divisors (see below), whose sum is σ = 516821760. Its totient is φ = 329229360.

The previous prime is 421002259. The next prime is 421002313. The reversal of 421002265 is 562200124.

It is a de Polignac number, because none of the positive numbers 2^k-421002265 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 518710 + ... + 519520.

It is an arithmetic number, because the mean of its divisors is an integer number (32301360).

Almost surely, 2^421002265 is an apocalyptic number.

It is an amenable number.

421002265 is a deficient number, since it is larger than the sum of its proper divisors (95819495).

421002265 is an frugal number, since it uses more digits than its factorization.

421002265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 421002265 is about 20518.3397232817. The cubic root of 421002265 is about 749.4824666648.

Adding to 421002265 its reverse (562200124), we get a palindrome (983202389).

The spelling of 421002265 in words is "four hundred twenty-one million, two thousand, two hundred sixty-five".