1299259742 has 32 divisors (see below), whose sum is σ = 2272644864. Its totient is φ = 551108800.

The previous prime is 1299259739. The next prime is 1299259747. The reversal of 1299259742 is 2479529921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299259747) 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, 10568 + ... + 52059.

It is an arithmetic number, because the mean of its divisors is an integer number (71020152).

Almost surely, 2^1299259742 is an apocalyptic number.

1299259742 is a deficient number, since it is larger than the sum of its proper divisors (973385122).

1299259742 is a wasteful number, since it uses less digits than its factorization.

1299259742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62704.

The product of its digits is 816480, while the sum is 50.

The square root of 1299259742 is about 36045.2457614038. The cubic root of 1299259742 is about 1091.1856867250.

The spelling of 1299259742 in words is "one billion, two hundred ninety-nine million, two hundred fifty-nine thousand, seven hundred forty-two".