142552394 has 8 divisors (see below), whose sum is σ = 214402980. Its totient is φ = 71084736.

The previous prime is 142552391. The next prime is 142552409. The reversal of 142552394 is 493255241.

It can be written as a sum of positive squares in 2 ways, for example, as 131905225 + 10647169 = 11485^2 + 3263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (142552391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94799 + ... + 96290.

Almost surely, 2^142552394 is an apocalyptic number.

142552394 is a deficient number, since it is larger than the sum of its proper divisors (71850586).

142552394 is a wasteful number, since it uses less digits than its factorization.

142552394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191464.

The product of its digits is 43200, while the sum is 35.

The square root of 142552394 is about 11939.5307277966. The cubic root of 142552394 is about 522.3859708582.

The spelling of 142552394 in words is "one hundred forty-two million, five hundred fifty-two thousand, three hundred ninety-four".