1342501521 has 4 divisors (see below), whose sum is σ = 1790002032. Its totient is φ = 895001012.

The previous prime is 1342501507. The next prime is 1342501541. The reversal of 1342501521 is 1251052431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1342501521 - 2¹⁵ = 1342468753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1342501491 and 1342501500.

It is not an unprimeable number, because it can be changed into a prime (1342501541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223750251 + ... + 223750256.

It is an arithmetic number, because the mean of its divisors is an integer number (447500508).

Almost surely, 2^1342501521 is an apocalyptic number.

It is an amenable number.

1342501521 is a deficient number, since it is larger than the sum of its proper divisors (447500511).

1342501521 is an equidigital number, since it uses as much as digits as its factorization.

1342501521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447500510.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1342501521 is about 36640.1626770406. The cubic root of 1342501521 is about 1103.1593801407.

Adding to 1342501521 its reverse (1251052431), we get a palindrome (2593553952).

The spelling of 1342501521 in words is "one billion, three hundred forty-two million, five hundred one thousand, five hundred twenty-one".