1259542402 has 16 divisors (see below), whose sum is σ = 1902906432. Its totient is φ = 625248720.

The previous prime is 1259542379. The next prime is 1259542421. The reversal of 1259542402 is 2042459521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491308 + ... + 493864.

It is an arithmetic number, because the mean of its divisors is an integer number (118931652).

Almost surely, 2^1259542402 is an apocalyptic number.

1259542402 is a deficient number, since it is larger than the sum of its proper divisors (643364030).

1259542402 is a wasteful number, since it uses less digits than its factorization.

1259542402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4233.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1259542402 is about 35490.0324316561. The cubic root of 1259542402 is about 1079.9515301750.

The spelling of 1259542402 in words is "one billion, two hundred fifty-nine million, five hundred forty-two thousand, four hundred two".