142747400 has 24 divisors (see below), whose sum is σ = 331888170. Its totient is φ = 57098880.

The previous prime is 142747387. The next prime is 142747439. The reversal of 142747400 is 4747241.

It can be written as a sum of positive squares in 3 ways, for example, as 58951684 + 83795716 = 7678^2 + 9154^2 .

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, 356669 + ... + 357068.

Almost surely, 2^142747400 is an apocalyptic number.

142747400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142747400 is an abundant number, since it is smaller than the sum of its proper divisors (189140770).

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

142747400 is a wasteful number, since it uses less digits than its factorization.

142747400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713753 (or 713744 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 142747400 is about 11947.6943382395. The cubic root of 142747400 is about 522.6240633948.

The spelling of 142747400 in words is "one hundred forty-two million, seven hundred forty-seven thousand, four hundred".