142081497 has 6 divisors (see below), whose sum is σ = 205228842. Its totient is φ = 94720992.

The previous prime is 142081493. The next prime is 142081501. The reversal of 142081497 is 794180241.

It is an interprime number because it is at equal distance from previous prime (142081493) and next prime (142081501).

It can be written as a sum of positive squares in only one way, i.e., 124010496 + 18071001 = 11136^2 + 4251^2 .

It is not a de Polignac number, because 142081497 - 2² = 142081493 is a prime.

It is a super-2 number, since 2×142081497² = 40374303579522018, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (142081493) 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 5 ways as a sum of consecutive naturals, for example, 7893408 + ... + 7893425.

It is an arithmetic number, because the mean of its divisors is an integer number (34204807).

Almost surely, 2^142081497 is an apocalyptic number.

It is an amenable number.

142081497 is a deficient number, since it is larger than the sum of its proper divisors (63147345).

142081497 is a wasteful number, since it uses less digits than its factorization.

142081497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15786839 (or 15786836 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 142081497 is about 11919.7943354741. The cubic root of 142081497 is about 521.8101326477.

The spelling of 142081497 in words is "one hundred forty-two million, eighty-one thousand, four hundred ninety-seven".