42807136 has 12 divisors (see below), whose sum is σ = 84276612. Its totient is φ = 21403552.

The previous prime is 42807119. The next prime is 42807137. The reversal of 42807136 is 63170824.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 42807098 and 42807107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42807137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668830 + ... + 668893.

It is an arithmetic number, because the mean of its divisors is an integer number (7023051).

Almost surely, 2^42807136 is an apocalyptic number.

It is an amenable number.

42807136 is a deficient number, since it is larger than the sum of its proper divisors (41469476).

42807136 is a wasteful number, since it uses less digits than its factorization.

42807136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337733 (or 1337725 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 42807136 is about 6542.7162555012. The cubic root of 42807136 is about 349.8152385379.

The spelling of 42807136 in words is "forty-two million, eight hundred seven thousand, one hundred thirty-six".