961421267 has 4 divisors (see below), whose sum is σ = 966301776. Its totient is φ = 956540760.

The previous prime is 961421249. The next prime is 961421297. The reversal of 961421267 is 762124169.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961421267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 961421267.

It is not an unprimeable number, because it can be changed into a prime (961421297) 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, 2439959 + ... + 2440352.

It is an arithmetic number, because the mean of its divisors is an integer number (241575444).

Almost surely, 2^961421267 is an apocalyptic number.

961421267 is a deficient number, since it is larger than the sum of its proper divisors (4880509).

961421267 is a wasteful number, since it uses less digits than its factorization.

961421267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880508.

The product of its digits is 36288, while the sum is 38.

The square root of 961421267 is about 31006.7938845667. The cubic root of 961421267 is about 986.9714154938.

The spelling of 961421267 in words is "nine hundred sixty-one million, four hundred twenty-one thousand, two hundred sixty-seven".