1142400398 has 16 divisors (see below), whose sum is σ = 1737736416. Its totient is φ = 563203200.

The previous prime is 1142400397. The next prime is 1142400431. The reversal of 1142400398 is 8930042411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142400397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36098 + ... + 59898.

It is an arithmetic number, because the mean of its divisors is an integer number (108608526).

Almost surely, 2^1142400398 is an apocalyptic number.

1142400398 is a deficient number, since it is larger than the sum of its proper divisors (595336018).

1142400398 is a wasteful number, since it uses less digits than its factorization.

1142400398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24139.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1142400398 is about 33799.4141665207. The cubic root of 1142400398 is about 1045.3766178354.

The spelling of 1142400398 in words is "one billion, one hundred forty-two million, four hundred thousand, three hundred ninety-eight".