742121163 has 32 divisors (see below), whose sum is σ = 1258560000. Its totient is φ = 423374688.

The previous prime is 742121161. The next prime is 742121189. The reversal of 742121163 is 361121247.

It is not a de Polignac number, because 742121163 - 2¹ = 742121161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (742121161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126213 + ... + 131961.

It is an arithmetic number, because the mean of its divisors is an integer number (39330000).

Almost surely, 2^742121163 is an apocalyptic number.

742121163 is a deficient number, since it is larger than the sum of its proper divisors (516438837).

742121163 is a wasteful number, since it uses less digits than its factorization.

742121163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6448 (or 6442 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 742121163 is about 27241.9008697998. The cubic root of 742121163 is about 905.3675797904.

The spelling of 742121163 in words is "seven hundred forty-two million, one hundred twenty-one thousand, one hundred sixty-three".