142561965 has 64 divisors (see below), whose sum is σ = 284884992. Its totient is φ = 59270400.

The previous prime is 142561957. The next prime is 142561973. The reversal of 142561965 is 569165241.

It is an interprime number because it is at equal distance from previous prime (142561957) and next prime (142561973).

It is not a de Polignac number, because 142561965 - 2³ = 142561957 is a prime.

It is a super-2 number, since 2×142561965² = 40647827729322450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96180 + ... + 97650.

It is an arithmetic number, because the mean of its divisors is an integer number (4451328).

Almost surely, 2^142561965 is an apocalyptic number.

142561965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142561965 is a deficient number, since it is larger than the sum of its proper divisors (142323027).

142561965 is a wasteful number, since it uses less digits than its factorization.

142561965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570.

The product of its digits is 64800, while the sum is 39.

The square root of 142561965 is about 11939.9315324670. The cubic root of 142561965 is about 522.3976616340.

The spelling of 142561965 in words is "one hundred forty-two million, five hundred sixty-one thousand, nine hundred sixty-five".