142691590 has 8 divisors (see below), whose sum is σ = 256844880. Its totient is φ = 57076632.

The previous prime is 142691581. The next prime is 142691597. The reversal of 142691590 is 95196241.

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 (142691597) 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, 7134570 + ... + 7134589.

It is an arithmetic number, because the mean of its divisors is an integer number (32105610).

Almost surely, 2^142691590 is an apocalyptic number.

142691590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142691590 is a deficient number, since it is larger than the sum of its proper divisors (114153290).

142691590 is a wasteful number, since it uses less digits than its factorization.

142691590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14269166.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 142691590 is about 11945.3585128283. The cubic root of 142691590 is about 522.5559443467. Note that the first 3 decimals are identical.

The spelling of 142691590 in words is "one hundred forty-two million, six hundred ninety-one thousand, five hundred ninety".