142241657 has 8 divisors (see below), whose sum is σ = 149861760. Its totient is φ = 134634960.

The previous prime is 142241639. The next prime is 142241677. The reversal of 142241657 is 756142241.

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

It is a cyclic number.

It is not a de Polignac number, because 142241657 - 2⁸ = 142241401 is a prime.

It is a super-2 number, since 2×142241657² = 40465377972211298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142241677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24407 + ... + 29667.

It is an arithmetic number, because the mean of its divisors is an integer number (18732720).

Almost surely, 2^142241657 is an apocalyptic number.

It is an amenable number.

142241657 is a deficient number, since it is larger than the sum of its proper divisors (7620103).

142241657 is a wasteful number, since it uses less digits than its factorization.

142241657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6703.

The product of its digits is 13440, while the sum is 32.

The square root of 142241657 is about 11926.5106799935. The cubic root of 142241657 is about 522.0061275050.

Adding to 142241657 its reverse (756142241), we get a palindrome (898383898).

The spelling of 142241657 in words is "one hundred forty-two million, two hundred forty-one thousand, six hundred fifty-seven".