126662421 has 8 divisors (see below), whose sum is σ = 172069920. Its totient is φ = 82848272.

The previous prime is 126662411. The next prime is 126662429. The reversal of 126662421 is 124266621.

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

It is a cyclic number.

It is not a de Polignac number, because 126662421 - 2²¹ = 124565269 is a prime.

It is a super-3 number, since 3×126662421³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126662429) 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, 398151 + ... + 398468.

It is an arithmetic number, because the mean of its divisors is an integer number (21508740).

Almost surely, 2^126662421 is an apocalyptic number.

It is an amenable number.

126662421 is a deficient number, since it is larger than the sum of its proper divisors (45407499).

126662421 is an equidigital number, since it uses as much as digits as its factorization.

126662421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796675.

The product of its digits is 6912, while the sum is 30.

The square root of 126662421 is about 11254.4400571508. The cubic root of 126662421 is about 502.2068070095.

The spelling of 126662421 in words is "one hundred twenty-six million, six hundred sixty-two thousand, four hundred twenty-one".