1140402400 has 36 divisors (see below), whose sum is σ = 2784009312. Its totient is φ = 456160640.

The previous prime is 1140402397. The next prime is 1140402427. The reversal of 1140402400 is 42040411.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 711952 + ... + 713551.

It is an arithmetic number, because the mean of its divisors is an integer number (77333592).

Almost surely, 2^1140402400 is an apocalyptic number.

1140402400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140402400 is an abundant number, since it is smaller than the sum of its proper divisors (1643606912).

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

1140402400 is a wasteful number, since it uses less digits than its factorization.

1140402400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425523 (or 1425510 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1140402400 is about 33769.8445362131. The cubic root of 1140402400 is about 1044.7668260227.

Adding to 1140402400 its reverse (42040411), we get a palindrome (1182442811).

The spelling of 1140402400 in words is "one billion, one hundred forty million, four hundred two thousand, four hundred".