126213099 has 4 divisors (see below), whose sum is σ = 168284136. Its totient is φ = 84142064.

The previous prime is 126213097. The next prime is 126213103. The reversal of 126213099 is 990312621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126213099 - 2¹ = 126213097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126213097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21035514 + ... + 21035519.

It is an arithmetic number, because the mean of its divisors is an integer number (42071034).

Almost surely, 2^126213099 is an apocalyptic number.

126213099 is a deficient number, since it is larger than the sum of its proper divisors (42071037).

126213099 is an equidigital number, since it uses as much as digits as its factorization.

126213099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42071036.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 126213099 is about 11234.4603341683. The cubic root of 126213099 is about 501.6122609746.

The spelling of 126213099 in words is "one hundred twenty-six million, two hundred thirteen thousand, ninety-nine".