84742951 has 4 divisors (see below), whose sum is σ = 84999304. Its totient is φ = 84486600.

The previous prime is 84742949. The next prime is 84742961. The reversal of 84742951 is 15924748.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84742951 - 2¹ = 84742949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84742961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127680 + ... + 128341.

It is an arithmetic number, because the mean of its divisors is an integer number (21249826).

Almost surely, 2^84742951 is an apocalyptic number.

84742951 is a deficient number, since it is larger than the sum of its proper divisors (256353).

84742951 is a wasteful number, since it uses less digits than its factorization.

84742951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256352.

The product of its digits is 80640, while the sum is 40.

The square root of 84742951 is about 9205.5934626726. The cubic root of 84742951 is about 439.2393037372.

The spelling of 84742951 in words is "eighty-four million, seven hundred forty-two thousand, nine hundred fifty-one".