42405769 has 8 divisors (see below), whose sum is σ = 51314688. Its totient is φ = 34209600.

The previous prime is 42405763. The next prime is 42405787. The reversal of 42405769 is 96750424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42405769 - 2³ = 42405761 is a prime.

It is a super-2 number, since 2×42405769² = 3596498488962722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42405761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178057 + ... + 178294.

It is an arithmetic number, because the mean of its divisors is an integer number (6414336).

Almost surely, 2^42405769 is an apocalyptic number.

It is an amenable number.

42405769 is a deficient number, since it is larger than the sum of its proper divisors (8908919).

42405769 is a wasteful number, since it uses less digits than its factorization.

42405769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356375.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 42405769 is about 6511.9712069388. The cubic root of 42405769 is about 348.7184945182.

The spelling of 42405769 in words is "forty-two million, four hundred five thousand, seven hundred sixty-nine".