121406126 has 4 divisors (see below), whose sum is σ = 182109192. Its totient is φ = 60703062.

The previous prime is 121406113. The next prime is 121406147. The reversal of 121406126 is 621604121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621604121 = 9403 ⋅66107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30351530 + ... + 30351533.

It is an arithmetic number, because the mean of its divisors is an integer number (45527298).

Almost surely, 2^121406126 is an apocalyptic number.

121406126 is a deficient number, since it is larger than the sum of its proper divisors (60703066).

121406126 is an equidigital number, since it uses as much as digits as its factorization.

121406126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60703065.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 121406126 is about 11018.4448085925. Note that the first 3 decimals coincide. The cubic root of 121406126 is about 495.1614968067.

The spelling of 121406126 in words is "one hundred twenty-one million, four hundred six thousand, one hundred twenty-six".