126021313 has 8 divisors (see below), whose sum is σ = 137648160. Its totient is φ = 114422880.

The previous prime is 126021277. The next prime is 126021317. The reversal of 126021313 is 313120621.

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

It is a de Polignac number, because none of the positive numbers 2^k-126021313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126021317) 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, 2781 + ... + 16117.

It is an arithmetic number, because the mean of its divisors is an integer number (17206020).

Almost surely, 2^126021313 is an apocalyptic number.

It is an amenable number.

126021313 is a deficient number, since it is larger than the sum of its proper divisors (11626847).

126021313 is a wasteful number, since it uses less digits than its factorization.

126021313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14207.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 126021313 is about 11225.9214766539. The cubic root of 126021313 is about 501.3580586803.

Adding to 126021313 its reverse (313120621), we get a palindrome (439141934).

The spelling of 126021313 in words is "one hundred twenty-six million, twenty-one thousand, three hundred thirteen".