42154013 has 4 divisors (see below), whose sum is σ = 45986208. Its totient is φ = 38321820.

The previous prime is 42154003. The next prime is 42154019. The reversal of 42154013 is 31045124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42154013 - 2⁴ = 42153997 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 (42154019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916081 + ... + 1916102.

It is an arithmetic number, because the mean of its divisors is an integer number (11496552).

Almost surely, 2^42154013 is an apocalyptic number.

It is an amenable number.

42154013 is a deficient number, since it is larger than the sum of its proper divisors (3832195).

42154013 is a wasteful number, since it uses less digits than its factorization.

42154013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832194.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 42154013 is about 6492.6121861698. The cubic root of 42154013 is about 348.0270297629.

Adding to 42154013 its reverse (31045124), we get a palindrome (73199137).

Subtracting from 42154013 its reverse (31045124), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 4215 and 4013, that added together give a palindrome (8228).

The spelling of 42154013 in words is "forty-two million, one hundred fifty-four thousand, thirteen".