1299289842 has 32 divisors (see below), whose sum is σ = 2986876800. Its totient is φ = 418161744.

The previous prime is 1299289837. The next prime is 1299289861. The reversal of 1299289842 is 2489829921.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413278 + ... + 416409.

It is an arithmetic number, because the mean of its divisors is an integer number (93339900).

Almost surely, 2^1299289842 is an apocalyptic number.

1299289842 is an abundant number, since it is smaller than the sum of its proper divisors (1687586958).

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

1299289842 is a wasteful number, since it uses less digits than its factorization.

1299289842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829727 (or 829721 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 1299289842 is about 36045.6632897773. The cubic root of 1299289842 is about 1091.1941131734.

The spelling of 1299289842 in words is "one billion, two hundred ninety-nine million, two hundred eighty-nine thousand, eight hundred forty-two".