4521402 has 24 divisors (see below), whose sum is σ = 9846720. Its totient is φ = 1499400.

The previous prime is 4521389. The next prime is 4521403. The reversal of 4521402 is 2041254.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4521403) 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, 3777 + ... + 4827.

It is an arithmetic number, because the mean of its divisors is an integer number (410280).

Almost surely, 2^4521402 is an apocalyptic number.

4521402 is an abundant number, since it is smaller than the sum of its proper divisors (5325318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4521402 is a wasteful number, since it uses less digits than its factorization.

4521402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1295 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 4521402 is about 2126.3588596472. The cubic root of 4521402 is about 165.3576813705.

Adding to 4521402 its reverse (2041254), we get a palindrome (6562656).

The spelling of 4521402 in words is "four million, five hundred twenty-one thousand, four hundred two".