142897934 has 4 divisors (see below), whose sum is σ = 214346904. Its totient is φ = 71448966.

The previous prime is 142897933. The next prime is 142897939. The reversal of 142897934 is 439798241.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142897933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35724482 + ... + 35724485.

It is an arithmetic number, because the mean of its divisors is an integer number (53586726).

Almost surely, 2^142897934 is an apocalyptic number.

142897934 is a deficient number, since it is larger than the sum of its proper divisors (71448970).

142897934 is an equidigital number, since it uses as much as digits as its factorization.

142897934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71448969.

The product of its digits is 435456, while the sum is 47.

The square root of 142897934 is about 11953.9923874829. The cubic root of 142897934 is about 522.8077095937.

The spelling of 142897934 in words is "one hundred forty-two million, eight hundred ninety-seven thousand, nine hundred thirty-four".