1142400408 has 32 divisors (see below), whose sum is σ = 3024002160. Its totient is φ = 358400000.

The previous prime is 1142400397. The next prime is 1142400431. The reversal of 1142400408 is 8040042411.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent 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, 1399593 + ... + 1400408.

Almost surely, 2^1142400408 is an apocalyptic number.

It is an amenable number.

1142400408 is an abundant number, since it is smaller than the sum of its proper divisors (1881601752).

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

1142400408 is a wasteful number, since it uses less digits than its factorization.

1142400408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800027 (or 2800023 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 1142400408 is about 33799.4143144523. The cubic root of 1142400408 is about 1045.3766208856.

Adding to 1142400408 its reverse (8040042411), we get a palindrome (9182442819).

The spelling of 1142400408 in words is "one billion, one hundred forty-two million, four hundred thousand, four hundred eight".