121723434 has 48 divisors (see below), whose sum is σ = 319146048. Its totient is φ = 32731776.

The previous prime is 121723423. The next prime is 121723447. The reversal of 121723434 is 434327121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121723398 and 121723407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26272 + ... + 30555.

It is an arithmetic number, because the mean of its divisors is an integer number (6648876).

Almost surely, 2^121723434 is an apocalyptic number.

121723434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121723434 is an abundant number, since it is smaller than the sum of its proper divisors (197422614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121723434 is a wasteful number, since it uses less digits than its factorization.

121723434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56859 (or 56856 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 121723434 is about 11032.8343593113. The cubic root of 121723434 is about 495.5925075132.

The spelling of 121723434 in words is "one hundred twenty-one million, seven hundred twenty-three thousand, four hundred thirty-four".