1521472642 has 4 divisors (see below), whose sum is σ = 2282208966. Its totient is φ = 760736320.

The previous prime is 1521472607. The next prime is 1521472651. The reversal of 1521472642 is 2462741251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1354313601 + 167159041 = 36801^2 + 12929^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1521472598 and 1521472607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380368159 + ... + 380368162.

Almost surely, 2^1521472642 is an apocalyptic number.

1521472642 is a deficient number, since it is larger than the sum of its proper divisors (760736324).

1521472642 is an equidigital number, since it uses as much as digits as its factorization.

1521472642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760736323.

The product of its digits is 26880, while the sum is 34.

The square root of 1521472642 is about 39006.0590421540. The cubic root of 1521472642 is about 1150.1506146778.

The spelling of 1521472642 in words is "one billion, five hundred twenty-one million, four hundred seventy-two thousand, six hundred forty-two".