1258296242 has 32 divisors (see below), whose sum is σ = 2404183680. Its totient is φ = 480833280.

The previous prime is 1258296241. The next prime is 1258296257. The reversal of 1258296242 is 2426928521.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1258296242.

It is not an unprimeable number, because it can be changed into a prime (1258296241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134609 + ... + 143652.

It is an arithmetic number, because the mean of its divisors is an integer number (75130740).

Almost surely, 2^1258296242 is an apocalyptic number.

1258296242 is a deficient number, since it is larger than the sum of its proper divisors (1145887438).

1258296242 is a wasteful number, since it uses less digits than its factorization.

1258296242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278306.

The product of its digits is 138240, while the sum is 41.

The square root of 1258296242 is about 35472.4716082767. The cubic root of 1258296242 is about 1079.5952535695.

The spelling of 1258296242 in words is "one billion, two hundred fifty-eight million, two hundred ninety-six thousand, two hundred forty-two".