142193390 has 8 divisors (see below), whose sum is σ = 255948120. Its totient is φ = 56877352.

The previous prime is 142193357. The next prime is 142193393. The reversal of 142193390 is 93391241.

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 (142193393) 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, 7109660 + ... + 7109679.

It is an arithmetic number, because the mean of its divisors is an integer number (31993515).

Almost surely, 2^142193390 is an apocalyptic number.

142193390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142193390 is a deficient number, since it is larger than the sum of its proper divisors (113754730).

142193390 is a wasteful number, since it uses less digits than its factorization.

142193390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14219346.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 142193390 is about 11924.4869910617. The cubic root of 142193390 is about 521.9470765427.

The spelling of 142193390 in words is "one hundred forty-two million, one hundred ninety-three thousand, three hundred ninety".