126401213 has 8 divisors (see below), whose sum is σ = 130052568. Its totient is φ = 122762304.

The previous prime is 126401207. The next prime is 126401221. The reversal of 126401213 is 312104621.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 126270169 = 362^2 + 11237^2 .

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 126401213 - 2⁸ = 126400957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126401203) 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, 19895 + ... + 25467.

It is an arithmetic number, because the mean of its divisors is an integer number (16256571).

Almost surely, 2^126401213 is an apocalyptic number.

It is an amenable number.

126401213 is a deficient number, since it is larger than the sum of its proper divisors (3651355).

126401213 is an equidigital number, since it uses as much as digits as its factorization.

126401213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 126401213 is about 11242.8294036688. The cubic root of 126401213 is about 501.8613461823.

Adding to 126401213 its reverse (312104621), we get a palindrome (438505834).

The spelling of 126401213 in words is "one hundred twenty-six million, four hundred one thousand, two hundred thirteen".