142697245 has 4 divisors (see below), whose sum is σ = 171236700. Its totient is φ = 114157792.

The previous prime is 142697231. The next prime is 142697249. The reversal of 142697245 is 542796241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542796241 = 13 ⋅41753557.

It can be written as a sum of positive squares in 2 ways, for example, as 66292164 + 76405081 = 8142^2 + 8741^2 .

It is a cyclic number.

It is not a de Polignac number, because 142697245 - 2⁵ = 142697213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142697198 and 142697207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142697249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14269720 + ... + 14269729.

It is an arithmetic number, because the mean of its divisors is an integer number (42809175).

Almost surely, 2^142697245 is an apocalyptic number.

It is an amenable number.

142697245 is a deficient number, since it is larger than the sum of its proper divisors (28539455).

142697245 is an equidigital number, since it uses as much as digits as its factorization.

142697245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28539454.

The product of its digits is 120960, while the sum is 40.

The square root of 142697245 is about 11945.5952132993. The cubic root of 142697245 is about 522.5628473810.

The spelling of 142697245 in words is "one hundred forty-two million, six hundred ninety-seven thousand, two hundred forty-five".