42409406 has 24 divisors (see below), whose sum is σ = 72360120. Its totient is φ = 18480096.

The previous prime is 42409399. The next prime is 42409417. The reversal of 42409406 is 60490424.

It is a super-3 number, since 3×42409406³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144596 + ... + 144888.

It is an arithmetic number, because the mean of its divisors is an integer number (3015005).

Almost surely, 2^42409406 is an apocalyptic number.

42409406 is a deficient number, since it is larger than the sum of its proper divisors (29950714).

42409406 is a wasteful number, since it uses less digits than its factorization.

42409406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 42409406 is about 6512.2504558716. The cubic root of 42409406 is about 348.7284637035.

The spelling of 42409406 in words is "forty-two million, four hundred nine thousand, four hundred six".