742621722 has 8 divisors (see below), whose sum is σ = 1485243456. Its totient is φ = 247540572.

The previous prime is 742621699. The next prime is 742621741. The reversal of 742621722 is 227126247.

It is a happy number.

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

742621722 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61885138 + ... + 61885149.

It is an arithmetic number, because the mean of its divisors is an integer number (185655432).

Almost surely, 2^742621722 is an apocalyptic number.

742621722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

742621722 is a wasteful number, since it uses less digits than its factorization.

742621722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123770292.

The product of its digits is 18816, while the sum is 33.

The square root of 742621722 is about 27251.0866205368. The cubic root of 742621722 is about 905.5710901510.

Adding to 742621722 its reverse (227126247), we get a palindrome (969747969).

The spelling of 742621722 in words is "seven hundred forty-two million, six hundred twenty-one thousand, seven hundred twenty-two".