101662421 has 8 divisors (see below), whose sum is σ = 119326080. Its totient is φ = 84783888.

The previous prime is 101662409. The next prime is 101662433. The reversal of 101662421 is 124266101.

It is an interprime number because it is at equal distance from previous prime (101662409) and next prime (101662433).

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

It is not a de Polignac number, because 101662421 - 2¹⁴ = 101646037 is a prime.

It is a super-3 number, since 3×101662421³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101662471) 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, 196001 + ... + 196518.

It is an arithmetic number, because the mean of its divisors is an integer number (14915760).

Almost surely, 2^101662421 is an apocalyptic number.

It is an amenable number.

101662421 is a deficient number, since it is larger than the sum of its proper divisors (17663659).

101662421 is an equidigital number, since it uses as much as digits as its factorization.

101662421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392563.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 101662421 is about 10082.7784365223. The cubic root of 101662421 is about 466.7168521425.

The spelling of 101662421 in words is "one hundred one million, six hundred sixty-two thousand, four hundred twenty-one".