142125394 has 4 divisors (see below), whose sum is σ = 213188094. Its totient is φ = 71062696.

The previous prime is 142125391. The next prime is 142125407. The reversal of 142125394 is 493521241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121286169 + 20839225 = 11013^2 + 4565^2 .

It is not an unprimeable number, because it can be changed into a prime (142125391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35531347 + ... + 35531350.

Almost surely, 2^142125394 is an apocalyptic number.

142125394 is a deficient number, since it is larger than the sum of its proper divisors (71062700).

142125394 is an equidigital number, since it uses as much as digits as its factorization.

142125394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71062699.

The product of its digits is 8640, while the sum is 31.

The square root of 142125394 is about 11921.6355421561. The cubic root of 142125394 is about 521.8638659893.

The spelling of 142125394 in words is "one hundred forty-two million, one hundred twenty-five thousand, three hundred ninety-four".