42154511 has 4 divisors (see below), whose sum is σ = 48176592. Its totient is φ = 36132432.

The previous prime is 42154499. The next prime is 42154517. The reversal of 42154511 is 11545124.

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

It is not a de Polignac number, because 42154511 - 2¹⁰ = 42153487 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 (42154517) 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, 3011030 + ... + 3011043.

It is an arithmetic number, because the mean of its divisors is an integer number (12044148).

Almost surely, 2^42154511 is an apocalyptic number.

42154511 is a deficient number, since it is larger than the sum of its proper divisors (6022081).

42154511 is an equidigital number, since it uses as much as digits as its factorization.

42154511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022080.

The product of its digits is 800, while the sum is 23.

The square root of 42154511 is about 6492.6505373384. The cubic root of 42154511 is about 348.0284002673.

Adding to 42154511 its reverse (11545124), we get a palindrome (53699635).

The spelling of 42154511 in words is "forty-two million, one hundred fifty-four thousand, five hundred eleven".