42471155 has 4 divisors (see below), whose sum is σ = 50965392. Its totient is φ = 33976920.

The previous prime is 42471139. The next prime is 42471157. The reversal of 42471155 is 55117424.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42471155 - 2⁴ = 42471139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42471157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4247111 + ... + 4247120.

It is an arithmetic number, because the mean of its divisors is an integer number (12741348).

Almost surely, 2^42471155 is an apocalyptic number.

42471155 is a deficient number, since it is larger than the sum of its proper divisors (8494237).

42471155 is an equidigital number, since it uses as much as digits as its factorization.

42471155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8494236.

The product of its digits is 5600, while the sum is 29.

The square root of 42471155 is about 6516.9897191878. The cubic root of 42471155 is about 348.8976336530.

Adding to 42471155 its reverse (55117424), we get a palindrome (97588579).

The spelling of 42471155 in words is "forty-two million, four hundred seventy-one thousand, one hundred fifty-five".