126215158 has 4 divisors (see below), whose sum is σ = 189322740. Its totient is φ = 63107578.

The previous prime is 126215149. The next prime is 126215171. The reversal of 126215158 is 851512621.

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

It is a super-2 number, since 2×126215158² = 31860532217929928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31553788 + ... + 31553791.

It is an arithmetic number, because the mean of its divisors is an integer number (47330685).

Almost surely, 2^126215158 is an apocalyptic number.

126215158 is a deficient number, since it is larger than the sum of its proper divisors (63107582).

126215158 is an equidigital number, since it uses as much as digits as its factorization.

126215158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63107581.

The product of its digits is 4800, while the sum is 31.

The square root of 126215158 is about 11234.5519714851. The cubic root of 126215158 is about 501.6149886736.

Adding to 126215158 its reverse (851512621), we get a palindrome (977727779).

The spelling of 126215158 in words is "one hundred twenty-six million, two hundred fifteen thousand, one hundred fifty-eight".