1521402 has 8 divisors (see below), whose sum is σ = 3042816. Its totient is φ = 507132.

The previous prime is 1521397. The next prime is 1521479. The reversal of 1521402 is 2041251.

It is a sphenic number, since it is the product of 3 distinct primes.

1521402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126778 + ... + 126789.

It is an arithmetic number, because the mean of its divisors is an integer number (380352).

2^1521402 is an apocalyptic number.

1521402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1521402 is a wasteful number, since it uses less digits than its factorization.

1521402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253572.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1521402 is about 1233.4512556238. The cubic root of 1521402 is about 115.0132813898.

Adding to 1521402 its reverse (2041251), we get a palindrome (3562653).

The spelling of 1521402 in words is "one million, five hundred twenty-one thousand, four hundred two".