142640157 has 8 divisors (see below), whose sum is σ = 207476640. Its totient is φ = 86448560.

The previous prime is 142640123. The next prime is 142640161. The reversal of 142640157 is 751046241.

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

It is not a de Polignac number, because 142640157 - 2⁶ = 142640093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142640257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2161182 + ... + 2161247.

It is an arithmetic number, because the mean of its divisors is an integer number (25934580).

Almost surely, 2^142640157 is an apocalyptic number.

It is an amenable number.

142640157 is a deficient number, since it is larger than the sum of its proper divisors (64836483).

142640157 is a wasteful number, since it uses less digits than its factorization.

142640157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322443.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 142640157 is about 11943.2054742435. The cubic root of 142640157 is about 522.4931519291.

Adding to 142640157 its reverse (751046241), we get a palindrome (893686398).

The spelling of 142640157 in words is "one hundred forty-two million, six hundred forty thousand, one hundred fifty-seven".