742578143 has 4 divisors (see below), whose sum is σ = 742854768. Its totient is φ = 742301520.

The previous prime is 742578127. The next prime is 742578149. The reversal of 742578143 is 341875247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341875247 = 7 ⋅48839321.

It is a cyclic number.

It is not a de Polignac number, because 742578143 - 2⁴ = 742578127 is a prime.

It is a super-2 number, since 2×742578143² = 1102844596922656898, which contains 22 as substring.

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 742578143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742578149) 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, 134246 + ... + 139667.

It is an arithmetic number, because the mean of its divisors is an integer number (185713692).

Almost surely, 2^742578143 is an apocalyptic number.

742578143 is a deficient number, since it is larger than the sum of its proper divisors (276625).

742578143 is a wasteful number, since it uses less digits than its factorization.

742578143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276624.

The product of its digits is 188160, while the sum is 41.

The square root of 742578143 is about 27250.2870260113. The cubic root of 742578143 is about 905.5533760384.

The spelling of 742578143 in words is "seven hundred forty-two million, five hundred seventy-eight thousand, one hundred forty-three".