142064231 has 6 divisors (see below), whose sum is σ = 142594200. Its totient is φ = 141535836.

The previous prime is 142064191. The next prime is 142064233. The reversal of 142064231 is 132460241.

It is a de Polignac number, because none of the positive numbers 2^k-142064231 is a prime.

It is a super-2 number, since 2×142064231² = 40364491459242722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142064197 and 142064206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142064233) 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 5 ways as a sum of consecutive naturals, for example, 236870 + ... + 237468.

It is an arithmetic number, because the mean of its divisors is an integer number (23765700).

Almost surely, 2^142064231 is an apocalyptic number.

142064231 is a deficient number, since it is larger than the sum of its proper divisors (529969).

142064231 is an frugal number, since it uses more digits than its factorization.

142064231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573 (or 1086 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 142064231 is about 11919.0700560069. The cubic root of 142064231 is about 521.7889946884.

The spelling of 142064231 in words is "one hundred forty-two million, sixty-four thousand, two hundred thirty-one".