42154005 has 16 divisors (see below), whose sum is σ = 68302080. Its totient is φ = 22196928.

The previous prime is 42154003. The next prime is 42154019. The reversal of 42154005 is 50045124.

It is not a de Polignac number, because 42154005 - 2¹ = 42154003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16602 + ... + 18971.

It is an arithmetic number, because the mean of its divisors is an integer number (4268880).

Almost surely, 2^42154005 is an apocalyptic number.

It is an amenable number.

42154005 is a deficient number, since it is larger than the sum of its proper divisors (26148075).

42154005 is a wasteful number, since it uses less digits than its factorization.

42154005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35660.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42154005 is about 6492.6115700849. The cubic root of 42154005 is about 348.0270077467.

Adding to 42154005 its reverse (50045124), we get a palindrome (92199129).

The spelling of 42154005 in words is "forty-two million, one hundred fifty-four thousand, five".