42011655 has 32 divisors (see below), whose sum is σ = 78465024. Its totient is φ = 18794496.

The previous prime is 42011621. The next prime is 42011663. The reversal of 42011655 is 55611024.

It is not a de Polignac number, because 42011655 - 2⁸ = 42011399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 679 + ... + 9191.

It is an arithmetic number, because the mean of its divisors is an integer number (2452032).

Almost surely, 2^42011655 is an apocalyptic number.

42011655 is a deficient number, since it is larger than the sum of its proper divisors (36453369).

42011655 is a wasteful number, since it uses less digits than its factorization.

42011655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 42011655 is about 6481.6398388062. The cubic root of 42011655 is about 347.6348147614.

Adding to 42011655 its reverse (55611024), we get a palindrome (97622679).

The spelling of 42011655 in words is "forty-two million, eleven thousand, six hundred fifty-five".