142694390 has 8 divisors (see below), whose sum is σ = 256849920. Its totient is φ = 57077752.

The previous prime is 142694359. The next prime is 142694393. The reversal of 142694390 is 93496241.

142694390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142694393) 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, 7134710 + ... + 7134729.

It is an arithmetic number, because the mean of its divisors is an integer number (32106240).

Almost surely, 2^142694390 is an apocalyptic number.

142694390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142694390 is a deficient number, since it is larger than the sum of its proper divisors (114155530).

142694390 is a wasteful number, since it uses less digits than its factorization.

142694390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14269446.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 142694390 is about 11945.4757125868. The cubic root of 142694390 is about 522.5593623175.

The spelling of 142694390 in words is "one hundred forty-two million, six hundred ninety-four thousand, three hundred ninety".