1204143439 has 16 divisors (see below), whose sum is σ = 1299587328. Its totient is φ = 1111646592.

The previous prime is 1204143433. The next prime is 1204143443. The reversal of 1204143439 is 9343414021.

It is not a de Polignac number, because 1204143439 - 2⁵ = 1204143407 is a prime.

It is a super-2 number, since 2×1204143439² = 2899922843373493442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1204143439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204143433) by changing a digit.

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, 184144 + ... + 190570.

It is an arithmetic number, because the mean of its divisors is an integer number (81224208).

Almost surely, 2^1204143439 is an apocalyptic number.

1204143439 is a deficient number, since it is larger than the sum of its proper divisors (95443889).

1204143439 is a wasteful number, since it uses less digits than its factorization.

1204143439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6654.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1204143439 is about 34700.7700058659. The cubic root of 1204143439 is about 1063.8802366637.

The spelling of 1204143439 in words is "one billion, two hundred four million, one hundred forty-three thousand, four hundred thirty-nine".