742857241 has 4 divisors (see below), whose sum is σ = 848979712. Its totient is φ = 636734772.

The previous prime is 742857217. The next prime is 742857277. The reversal of 742857241 is 142758247.

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 742857241 - 2⁷ = 742857113 is a prime.

It is a super-2 number, since 2×742857241² = 1103673761012264162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 742857194 and 742857203.

It is not an unprimeable number, because it can be changed into a prime (742857281) 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 3 ways as a sum of consecutive naturals, for example, 53061225 + ... + 53061238.

It is an arithmetic number, because the mean of its divisors is an integer number (212244928).

Almost surely, 2^742857241 is an apocalyptic number.

It is an amenable number.

742857241 is a deficient number, since it is larger than the sum of its proper divisors (106122471).

742857241 is a wasteful number, since it uses less digits than its factorization.

742857241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106122470.

The product of its digits is 125440, while the sum is 40.

The square root of 742857241 is about 27255.4075551990. The cubic root of 742857241 is about 905.6668125754. Note that the first 3 decimals are identical.

The spelling of 742857241 in words is "seven hundred forty-two million, eight hundred fifty-seven thousand, two hundred forty-one".