126401983 has 8 divisors (see below), whose sum is σ = 130798800. Its totient is φ = 122071488.

The previous prime is 126401971. The next prime is 126402007. The reversal of 126401983 is 389104621.

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 126401983 - 2¹³ = 126393791 is a prime.

It is a super-2 number, since 2×126401983² = 31954922612664578, which contains 22 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 (126401963) 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, 12688 + ... + 20341.

It is an arithmetic number, because the mean of its divisors is an integer number (16349850).

Almost surely, 2^126401983 is an apocalyptic number.

126401983 is a deficient number, since it is larger than the sum of its proper divisors (4396817).

126401983 is an equidigital number, since it uses as much as digits as its factorization.

126401983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33161.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 126401983 is about 11242.8636476656. The cubic root of 126401983 is about 501.8623652455.

The spelling of 126401983 in words is "one hundred twenty-six million, four hundred one thousand, nine hundred eighty-three".