742842121 has 8 divisors (see below), whose sum is σ = 849255680. Its totient is φ = 636501888.

The previous prime is 742842103. The next prime is 742842127. The reversal of 742842121 is 121248247.

742842121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 742842121 - 2⁹ = 742841609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742842127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5440 + ... + 38926.

It is an arithmetic number, because the mean of its divisors is an integer number (106156960).

Almost surely, 2^742842121 is an apocalyptic number.

It is an amenable number.

742842121 is a deficient number, since it is larger than the sum of its proper divisors (106413559).

742842121 is a wasteful number, since it uses less digits than its factorization.

742842121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36663.

The product of its digits is 7168, while the sum is 31.

The square root of 742842121 is about 27255.1301776381. The cubic root of 742842121 is about 905.6606679335.

The spelling of 742842121 in words is "seven hundred forty-two million, eight hundred forty-two thousand, one hundred twenty-one".