742221185 has 4 divisors (see below), whose sum is σ = 890665428. Its totient is φ = 593776944.

The previous prime is 742221143. The next prime is 742221211. The reversal of 742221185 is 581122247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 253987969 + 488233216 = 15937^2 + 22096^2 .

It is a cyclic number.

It is not a de Polignac number, because 742221185 - 2¹⁶ = 742155649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74222114 + ... + 74222123.

It is an arithmetic number, because the mean of its divisors is an integer number (222666357).

Almost surely, 2^742221185 is an apocalyptic number.

It is an amenable number.

742221185 is a deficient number, since it is larger than the sum of its proper divisors (148444243).

742221185 is a wasteful number, since it uses less digits than its factorization.

742221185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148444242.

The product of its digits is 8960, while the sum is 32.

The square root of 742221185 is about 27243.7366196342. The cubic root of 742221185 is about 905.4082526672.

The spelling of 742221185 in words is "seven hundred forty-two million, two hundred twenty-one thousand, one hundred eighty-five".