1142400204 has 108 divisors (see below), whose sum is σ = 3361051512. Its totient is φ = 325797120.

The previous prime is 1142400191. The next prime is 1142400211. The reversal of 1142400204 is 4020042411.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 35 ways as a sum of consecutive naturals, for example, 66339 + ... + 81765.

Almost surely, 2^1142400204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142400204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680525756).

1142400204 is an abundant number, since it is smaller than the sum of its proper divisors (2218651308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142400204 is a wasteful number, since it uses less digits than its factorization.

1142400204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15476 (or 15460 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1142400204 is about 33799.4112966483. The cubic root of 1142400204 is about 1045.3765586608.

Adding to 1142400204 its reverse (4020042411), we get a palindrome (5162442615).

The spelling of 1142400204 in words is "one billion, one hundred forty-two million, four hundred thousand, two hundred four".