742278481 has 4 divisors (see below), whose sum is σ = 848318272. Its totient is φ = 636238692.

The previous prime is 742278479. The next prime is 742278499. The reversal of 742278481 is 184872247.

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 742278481 - 2¹ = 742278479 is a prime.

It is a super-2 number, since 2×742278481² = 1101954686711334722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742278421) 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, 53019885 + ... + 53019898.

It is an arithmetic number, because the mean of its divisors is an integer number (212079568).

Almost surely, 2^742278481 is an apocalyptic number.

It is an amenable number.

742278481 is a deficient number, since it is larger than the sum of its proper divisors (106039791).

742278481 is a wasteful number, since it uses less digits than its factorization.

742278481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106039790.

The product of its digits is 200704, while the sum is 43.

The square root of 742278481 is about 27244.7881437900. The cubic root of 742278481 is about 905.4315498269.

The spelling of 742278481 in words is "seven hundred forty-two million, two hundred seventy-eight thousand, four hundred eighty-one".