42040136 has 16 divisors (see below), whose sum is σ = 82252800. Its totient is φ = 20106064.

The previous prime is 42040121. The next prime is 42040151. The reversal of 42040136 is 63104024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42040121) and next prime (42040151).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114056 + ... + 114423.

It is an arithmetic number, because the mean of its divisors is an integer number (5140800).

Almost surely, 2^42040136 is an apocalyptic number.

42040136 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

42040136 is a deficient number, since it is larger than the sum of its proper divisors (40212664).

42040136 is a wasteful number, since it uses less digits than its factorization.

42040136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228508 (or 228504 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 42040136 is about 6483.8365186053. The cubic root of 42040136 is about 347.7133544794.

The spelling of 42040136 in words is "forty-two million, forty thousand, one hundred thirty-six".