42020151 has 4 divisors (see below), whose sum is σ = 56026872. Its totient is φ = 28013432.

The previous prime is 42020131. The next prime is 42020171. The reversal of 42020151 is 15102024.

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 (42020131) and next prime (42020171).

It is a cyclic number.

It is not a de Polignac number, because 42020151 - 2⁶ = 42020087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42020151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020131) 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, 7003356 + ... + 7003361.

It is an arithmetic number, because the mean of its divisors is an integer number (14006718).

Almost surely, 2^42020151 is an apocalyptic number.

42020151 is a deficient number, since it is larger than the sum of its proper divisors (14006721).

42020151 is a wasteful number, since it uses less digits than its factorization.

42020151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14006720.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 42020151 is about 6482.2951953764. The cubic root of 42020151 is about 347.6582471979.

Adding to 42020151 its reverse (15102024), we get a palindrome (57122175).

The spelling of 42020151 in words is "forty-two million, twenty thousand, one hundred fifty-one".