1271520204 has 48 divisors (see below), whose sum is σ = 3127084800. Its totient is φ = 401011776.

The previous prime is 1271520203. The next prime is 1271520319. The reversal of 1271520204 is 4020251721.

It is not an unprimeable number, because it can be changed into a prime (1271520203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196777 + ... + 203135.

It is an arithmetic number, because the mean of its divisors is an integer number (65147600).

Almost surely, 2^1271520204 is an apocalyptic number.

It is an amenable number.

1271520204 is an abundant number, since it is smaller than the sum of its proper divisors (1855564596).

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

1271520204 is a wasteful number, since it uses less digits than its factorization.

1271520204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262 (or 7260 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 1271520204 is about 35658.3819599263. The cubic root of 1271520204 is about 1083.3640544398.

Adding to 1271520204 its reverse (4020251721), we get a palindrome (5291771925).

The spelling of 1271520204 in words is "one billion, two hundred seventy-one million, five hundred twenty thousand, two hundred four".