742138741 has 4 divisors (see below), whose sum is σ = 744381184. Its totient is φ = 739896300.

The previous prime is 742138721. The next prime is 742138751. The reversal of 742138741 is 147831247.

742138741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 742138741 - 2¹³ = 742130549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742138741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742138721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120725 + ... + 1121386.

It is an arithmetic number, because the mean of its divisors is an integer number (186095296).

Almost surely, 2^742138741 is an apocalyptic number.

It is an amenable number.

742138741 is a deficient number, since it is larger than the sum of its proper divisors (2242443).

742138741 is a wasteful number, since it uses less digits than its factorization.

742138741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242442.

The product of its digits is 37632, while the sum is 37.

The square root of 742138741 is about 27242.2234958896. The cubic root of 742138741 is about 905.3747279608.

Adding to 742138741 its reverse (147831247), we get a palindrome (889969988).

The spelling of 742138741 in words is "seven hundred forty-two million, one hundred thirty-eight thousand, seven hundred forty-one".