121356723 has 16 divisors (see below), whose sum is σ = 167552000. Its totient is φ = 78049440.

The previous prime is 121356713. The next prime is 121356731. The reversal of 121356723 is 327653121.

It is not a de Polignac number, because 121356723 - 2⁵ = 121356691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121356713) 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, 30588 + ... + 34326.

It is an arithmetic number, because the mean of its divisors is an integer number (10472000).

Almost surely, 2^121356723 is an apocalyptic number.

121356723 is a deficient number, since it is larger than the sum of its proper divisors (46195277).

121356723 is a wasteful number, since it uses less digits than its factorization.

121356723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122.

The product of its digits is 7560, while the sum is 30.

The square root of 121356723 is about 11016.2027486789. The cubic root of 121356723 is about 495.0943234190.

The spelling of 121356723 in words is "one hundred twenty-one million, three hundred fifty-six thousand, seven hundred twenty-three".