142531965 has 24 divisors (see below), whose sum is σ = 252315648. Its totient is φ = 74398560.

The previous prime is 142531957. The next prime is 142531967. The reversal of 142531965 is 569135241.

It is not a de Polignac number, because 142531965 - 2³ = 142531957 is a prime.

It is a super-2 number, since 2×142531965² = 40630722093522450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142531967) 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 23 ways as a sum of consecutive naturals, for example, 31581 + ... + 35810.

It is an arithmetic number, because the mean of its divisors is an integer number (10513152).

Almost surely, 2^142531965 is an apocalyptic number.

142531965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142531965 is a deficient number, since it is larger than the sum of its proper divisors (109783683).

142531965 is a wasteful number, since it uses less digits than its factorization.

142531965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67449 (or 67446 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 142531965 is about 11938.6751777574. The cubic root of 142531965 is about 522.3610155125.

The spelling of 142531965 in words is "one hundred forty-two million, five hundred thirty-one thousand, nine hundred sixty-five".