742991249 has 32 divisors (see below), whose sum is σ = 1007596800. Its totient is φ = 529056000.

The previous prime is 742991237. The next prime is 742991261. The reversal of 742991249 is 942199247.

It is an interprime number because it is at equal distance from previous prime (742991237) and next prime (742991261).

It is not a de Polignac number, because 742991249 - 2⁴ = 742991233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742991209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97427 + ... + 104775.

It is an arithmetic number, because the mean of its divisors is an integer number (31487400).

Almost surely, 2^742991249 is an apocalyptic number.

It is an amenable number.

742991249 is a deficient number, since it is larger than the sum of its proper divisors (264605551).

742991249 is a wasteful number, since it uses less digits than its factorization.

742991249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7481.

The product of its digits is 326592, while the sum is 47.

The square root of 742991249 is about 27257.8658188788. The cubic root of 742991249 is about 905.7212686647.

The spelling of 742991249 in words is "seven hundred forty-two million, nine hundred ninety-one thousand, two hundred forty-nine".