967642421 has 8 divisors (see below), whose sum is σ = 987036000. Its totient is φ = 948348720.

The previous prime is 967642411. The next prime is 967642427. The reversal of 967642421 is 124246769.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-967642421 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 (967642427) 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, 5246 + ... + 44303.

It is an arithmetic number, because the mean of its divisors is an integer number (123379500).

Almost surely, 2^967642421 is an apocalyptic number.

It is an amenable number.

967642421 is a deficient number, since it is larger than the sum of its proper divisors (19393579).

967642421 is a wasteful number, since it uses less digits than its factorization.

967642421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49939.

The product of its digits is 145152, while the sum is 41.

The square root of 967642421 is about 31106.9513292447. The cubic root of 967642421 is about 989.0956680697.

The spelling of 967642421 in words is "nine hundred sixty-seven million, six hundred forty-two thousand, four hundred twenty-one".