42040355 has 8 divisors (see below), whose sum is σ = 57655392. Its totient is φ = 28827648.

The previous prime is 42040351. The next prime is 42040373. The reversal of 42040355 is 55304024.

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 42040355 - 2² = 42040351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42040355.

It is not an unprimeable number, because it can be changed into a prime (42040351) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 600542 + ... + 600611.

It is an arithmetic number, because the mean of its divisors is an integer number (7206924).

Almost surely, 2^42040355 is an apocalyptic number.

42040355 is a deficient number, since it is larger than the sum of its proper divisors (15615037).

42040355 is a wasteful number, since it uses less digits than its factorization.

42040355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201165.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42040355 is about 6483.8534067328. The cubic root of 42040355 is about 347.7139582603.

Adding to 42040355 its reverse (55304024), we get a palindrome (97344379).

The spelling of 42040355 in words is "forty-two million, forty thousand, three hundred fifty-five".