142453971 has 40 divisors (see below), whose sum is σ = 236042928. Its totient is φ = 84888000.

The previous prime is 142453943. The next prime is 142454017. The reversal of 142453971 is 179354241.

It is not a de Polignac number, because 142453971 - 2⁵ = 142453939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142453901) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53041 + ... + 55661.

Almost surely, 2^142453971 is an apocalyptic number.

142453971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142453971 is a deficient number, since it is larger than the sum of its proper divisors (93588957).

142453971 is a wasteful number, since it uses less digits than its factorization.

142453971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705 (or 2696 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 142453971 is about 11935.4082879473. The cubic root of 142453971 is about 522.2657188574.

The spelling of 142453971 in words is "one hundred forty-two million, four hundred fifty-three thousand, nine hundred seventy-one".