42674409 has 6 divisors (see below), whose sum is σ = 61640826. Its totient is φ = 28449600.

The previous prime is 42674371. The next prime is 42674461. The reversal of 42674409 is 90447624.

It can be written as a sum of positive squares in only one way, i.e., 31304025 + 11370384 = 5595^2 + 3372^2 .

It is not a de Polignac number, because 42674409 - 2¹¹ = 42672361 is a prime.

It is a super-2 number, since 2×42674409² = 3642210366998562, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42674509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2370792 + ... + 2370809.

It is an arithmetic number, because the mean of its divisors is an integer number (10273471).

Almost surely, 2^42674409 is an apocalyptic number.

It is an amenable number.

42674409 is a deficient number, since it is larger than the sum of its proper divisors (18966417).

42674409 is a wasteful number, since it uses less digits than its factorization.

42674409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741607 (or 4741604 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 42674409 is about 6532.5652694788. The cubic root of 42674409 is about 349.4533207135.

The spelling of 42674409 in words is "forty-two million, six hundred seventy-four thousand, four hundred nine".