40102655 has 8 divisors (see below), whose sum is σ = 48157200. Its totient is φ = 32059456.

The previous prime is 40102651. The next prime is 40102661. The reversal of 40102655 is 55620104.

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 40102655 - 2² = 40102651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40102655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40102651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12176 + ... + 15114.

It is an arithmetic number, because the mean of its divisors is an integer number (6019650).

Almost surely, 2^40102655 is an apocalyptic number.

40102655 is a deficient number, since it is larger than the sum of its proper divisors (8054545).

40102655 is a wasteful number, since it uses less digits than its factorization.

40102655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40102655 is about 6332.6657104256. The cubic root of 40102655 is about 342.2875020511.

Adding to 40102655 its reverse (55620104), we get a palindrome (95722759).

The spelling of 40102655 in words is "forty million, one hundred two thousand, six hundred fifty-five".