98642421 has 8 divisors (see below), whose sum is σ = 146136960. Its totient is φ = 65761596.

The previous prime is 98642419. The next prime is 98642443. The reversal of 98642421 is 12424689.

98642421 is a `hidden beast` number, since 9 + 8 + 642 + 4 + 2 + 1 = 666.

It is not a de Polignac number, because 98642421 - 2¹ = 98642419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98642821) 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, 1826685 + ... + 1826738.

It is an arithmetic number, because the mean of its divisors is an integer number (18267120).

Almost surely, 2^98642421 is an apocalyptic number.

It is an amenable number.

98642421 is a deficient number, since it is larger than the sum of its proper divisors (47494539).

98642421 is a wasteful number, since it uses less digits than its factorization.

98642421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653432 (or 3653426 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 98642421 is about 9931.8890952326. The cubic root of 98642421 is about 462.0488647927.

The spelling of 98642421 in words is "ninety-eight million, six hundred forty-two thousand, four hundred twenty-one".