742005381 has 8 divisors (see below), whose sum is σ = 1065443680. Its totient is φ = 456618672.

The previous prime is 742005379. The next prime is 742005391. The reversal of 742005381 is 183500247.

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

It is not a de Polignac number, because 742005381 - 2¹ = 742005379 is a prime.

It is a super-2 number, since 2×742005381² = 1101143970865910322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742005391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9512851 + ... + 9512928.

It is an arithmetic number, because the mean of its divisors is an integer number (133180460).

Almost surely, 2^742005381 is an apocalyptic number.

It is an amenable number.

742005381 is a deficient number, since it is larger than the sum of its proper divisors (323438299).

742005381 is a wasteful number, since it uses less digits than its factorization.

742005381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19025795.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 742005381 is about 27239.7757149357. The cubic root of 742005381 is about 905.3204937141.

The spelling of 742005381 in words is "seven hundred forty-two million, five thousand, three hundred eighty-one".