126121233 has 16 divisors (see below), whose sum is σ = 193571840. Its totient is φ = 71549136.

The previous prime is 126121231. The next prime is 126121253. The reversal of 126121233 is 332121621.

It is not a de Polignac number, because 126121233 - 2¹ = 126121231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (126121231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18685 + ... + 24522.

It is an arithmetic number, because the mean of its divisors is an integer number (12098240).

Almost surely, 2^126121233 is an apocalyptic number.

It is an amenable number.

126121233 is a deficient number, since it is larger than the sum of its proper divisors (67450607).

126121233 is a wasteful number, since it uses less digits than its factorization.

126121233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43356.

The product of its digits is 432, while the sum is 21.

The square root of 126121233 is about 11230.3710090095. The cubic root of 126121233 is about 501.4905295613.

Adding to 126121233 its reverse (332121621), we get a palindrome (458242854).

The spelling of 126121233 in words is "one hundred twenty-six million, one hundred twenty-one thousand, two hundred thirty-three".