74354021 has 12 divisors (see below), whose sum is σ = 86830380. Its totient is φ = 63483840.

The previous prime is 74354003. The next prime is 74354029. The reversal of 74354021 is 12045347.

It can be written as a sum of positive squares in 2 ways, for example, as 42837025 + 31516996 = 6545^2 + 5614^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74354021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74354029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10361 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (7235865).

Almost surely, 2^74354021 is an apocalyptic number.

It is an amenable number.

74354021 is a deficient number, since it is larger than the sum of its proper divisors (12476359).

74354021 is a wasteful number, since it uses less digits than its factorization.

74354021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5924 (or 5917 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 74354021 is about 8622.8777678916. The cubic root of 74354021 is about 420.5020847339.

Adding to 74354021 its reverse (12045347), we get a palindrome (86399368).

The spelling of 74354021 in words is "seventy-four million, three hundred fifty-four thousand, twenty-one".