142313409 has 32 divisors (see below), whose sum is σ = 255133440. Its totient is φ = 76536576.

The previous prime is 142313407. The next prime is 142313429. The reversal of 142313409 is 904313241.

142313409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142313409 - 2¹ = 142313407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142313407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18934 + ... + 25359.

It is an arithmetic number, because the mean of its divisors is an integer number (7972920).

Almost surely, 2^142313409 is an apocalyptic number.

It is an amenable number.

142313409 is a deficient number, since it is larger than the sum of its proper divisors (112820031).

142313409 is a wasteful number, since it uses less digits than its factorization.

142313409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44326 (or 44320 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 142313409 is about 11929.5183892729. The cubic root of 142313409 is about 522.0938858741.

The spelling of 142313409 in words is "one hundred forty-two million, three hundred thirteen thousand, four hundred nine".