42808151 has 4 divisors (see below), whose sum is σ = 42850704. Its totient is φ = 42765600.

The previous prime is 42808133. The next prime is 42808169. The reversal of 42808151 is 15180824.

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

It is an interprime number because it is at equal distance from previous prime (42808133) and next prime (42808169).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42808151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42808111) 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, 19730 + ... + 21791.

It is an arithmetic number, because the mean of its divisors is an integer number (10712676).

Almost surely, 2^42808151 is an apocalyptic number.

42808151 is a deficient number, since it is larger than the sum of its proper divisors (42553).

42808151 is a wasteful number, since it uses less digits than its factorization.

42808151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42552.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 42808151 is about 6542.7938222139. The cubic root of 42808151 is about 349.8180033391.

Adding to 42808151 its reverse (15180824), we get a palindrome (57988975).

The spelling of 42808151 in words is "forty-two million, eight hundred eight thousand, one hundred fifty-one".