977142943 has 8 divisors (see below), whose sum is σ = 1119329280. Its totient is φ = 835605240.

The previous prime is 977142931. The next prime is 977142973. The reversal of 977142943 is 349241779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 977142943 - 2⁵ = 977142911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 977142893 and 977142902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977142973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158923 + ... + 164956.

It is an arithmetic number, because the mean of its divisors is an integer number (139916160).

Almost surely, 2^977142943 is an apocalyptic number.

977142943 is a deficient number, since it is larger than the sum of its proper divisors (142186337).

977142943 is a wasteful number, since it uses less digits than its factorization.

977142943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324317.

The product of its digits is 381024, while the sum is 46.

The square root of 977142943 is about 31259.2857084099. The cubic root of 977142943 is about 992.3221829922.

The spelling of 977142943 in words is "nine hundred seventy-seven million, one hundred forty-two thousand, nine hundred forty-three".