742826887 has 4 divisors (see below), whose sum is σ = 810356616. Its totient is φ = 675297160.

The previous prime is 742826839. The next prime is 742826891. The reversal of 742826887 is 788628247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788628247 = 11 ⋅71693477.

It is a cyclic number.

It is not a de Polignac number, because 742826887 - 2¹⁹ = 742302599 is a prime.

It is a super-2 number, since 2×742826887² = 1103583568100221538, 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 (742826827) 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, 33764848 + ... + 33764869.

It is an arithmetic number, because the mean of its divisors is an integer number (202589154).

Almost surely, 2^742826887 is an apocalyptic number.

742826887 is a deficient number, since it is larger than the sum of its proper divisors (67529729).

742826887 is a wasteful number, since it uses less digits than its factorization.

742826887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67529728.

The product of its digits is 2408448, while the sum is 52.

The square root of 742826887 is about 27254.8507058835. The cubic root of 742826887 is about 905.6544768786.

The spelling of 742826887 in words is "seven hundred forty-two million, eight hundred twenty-six thousand, eight hundred eighty-seven".