42301409 has 4 divisors (see below), whose sum is σ = 42737604. Its totient is φ = 41865216.

The previous prime is 42301361. The next prime is 42301421. The reversal of 42301409 is 90410324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12271009 + 30030400 = 3503^2 + 5480^2 .

It is a cyclic number.

It is not a de Polignac number, because 42301409 - 2¹² = 42297313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42301489) 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, 217952 + ... + 218145.

It is an arithmetic number, because the mean of its divisors is an integer number (10684401).

Almost surely, 2^42301409 is an apocalyptic number.

It is an amenable number.

42301409 is a deficient number, since it is larger than the sum of its proper divisors (436195).

42301409 is an equidigital number, since it uses as much as digits as its factorization.

42301409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436194.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 42301409 is about 6503.9533362410. The cubic root of 42301409 is about 348.4321957634.

The spelling of 42301409 in words is "forty-two million, three hundred one thousand, four hundred nine".