1213142516 has 24 divisors (see below), whose sum is σ = 2145329760. Its totient is φ = 600220512.

The previous prime is 1213142509. The next prime is 1213142519. The reversal of 1213142516 is 6152413121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213142519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172811 + ... + 179693.

It is an arithmetic number, because the mean of its divisors is an integer number (89388740).

Almost surely, 2^1213142516 is an apocalyptic number.

It is an amenable number.

1213142516 is a deficient number, since it is larger than the sum of its proper divisors (932187244).

1213142516 is a wasteful number, since it uses less digits than its factorization.

1213142516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7343 (or 7341 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 1213142516 is about 34830.1954631323. The cubic root of 1213142516 is about 1066.5239384982.

Adding to 1213142516 its reverse (6152413121), we get a palindrome (7365555637).

The spelling of 1213142516 in words is "one billion, two hundred thirteen million, one hundred forty-two thousand, five hundred sixteen".