981124421 has 8 divisors (see below), whose sum is σ = 1012830720. Its totient is φ = 949822272.

The previous prime is 981124381. The next prime is 981124423. The reversal of 981124421 is 124421189.

It is a happy number.

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-981124421 is a prime.

It is a super-3 number, since 3×981124421³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981124423) 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, 96101 + ... + 105818.

It is an arithmetic number, because the mean of its divisors is an integer number (126603840).

Almost surely, 2^981124421 is an apocalyptic number.

It is an amenable number.

981124421 is a deficient number, since it is larger than the sum of its proper divisors (31706299).

981124421 is a wasteful number, since it uses less digits than its factorization.

981124421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202075.

The product of its digits is 4608, while the sum is 32.

The square root of 981124421 is about 31322.9056921608. The cubic root of 981124421 is about 993.6681324063.

The spelling of 981124421 in words is "nine hundred eighty-one million, one hundred twenty-four thousand, four hundred twenty-one".