74426047 has 4 divisors (see below), whose sum is σ = 74443320. Its totient is φ = 74408776.

The previous prime is 74426003. The next prime is 74426069. The reversal of 74426047 is 74062447.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74062447 = 5197 ⋅14251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74426047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74426147) 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, 3729 + ... + 12757.

It is an arithmetic number, because the mean of its divisors is an integer number (18610830).

Almost surely, 2^74426047 is an apocalyptic number.

74426047 is a deficient number, since it is larger than the sum of its proper divisors (17273).

74426047 is an equidigital number, since it uses as much as digits as its factorization.

74426047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17272.

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 74426047 is about 8627.0532048898. The cubic root of 74426047 is about 420.6378196429.

The spelling of 74426047 in words is "seventy-four million, four hundred twenty-six thousand, forty-seven".