142031869 has 8 divisors (see below), whose sum is σ = 162645120. Its totient is φ = 121499376.

The previous prime is 142031861. The next prime is 142031887. The reversal of 142031869 is 968130241.

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 142031869 - 2³ = 142031861 is a prime.

It is a super-2 number, since 2×142031869² = 40346103623266322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142031861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16369 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (20330640).

Almost surely, 2^142031869 is an apocalyptic number.

It is an amenable number.

142031869 is a deficient number, since it is larger than the sum of its proper divisors (20613251).

142031869 is an equidigital number, since it uses as much as digits as its factorization.

142031869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40379.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 142031869 is about 11917.7124063303. The cubic root of 142031869 is about 521.7493707856.

The spelling of 142031869 in words is "one hundred forty-two million, thirty-one thousand, eight hundred sixty-nine".