42140555 has 8 divisors (see below), whose sum is σ = 50642592. Its totient is φ = 33663168.

The previous prime is 42140543. The next prime is 42140561. The reversal of 42140555 is 55504124.

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 42140555 - 2¹⁸ = 41878411 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2162 + ... + 9431.

It is an arithmetic number, because the mean of its divisors is an integer number (6330324).

Almost surely, 2^42140555 is an apocalyptic number.

42140555 is a deficient number, since it is larger than the sum of its proper divisors (8502037).

42140555 is a wasteful number, since it uses less digits than its factorization.

42140555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 42140555 is about 6491.5756946985. The cubic root of 42140555 is about 347.9899890325.

Adding to 42140555 its reverse (55504124), we get a palindrome (97644679).

The spelling of 42140555 in words is "forty-two million, one hundred forty thousand, five hundred fifty-five".