42124154 has 4 divisors (see below), whose sum is σ = 63186234. Its totient is φ = 21062076.

The previous prime is 42124141. The next prime is 42124157. The reversal of 42124154 is 45142124.

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

It can be written as a sum of positive squares in only one way, i.e., 30747025 + 11377129 = 5545^2 + 3373^2 .

It is not an unprimeable number, because it can be changed into a prime (42124157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531037 + ... + 10531040.

Almost surely, 2^42124154 is an apocalyptic number.

42124154 is a deficient number, since it is larger than the sum of its proper divisors (21062080).

42124154 is a wasteful number, since it uses less digits than its factorization.

42124154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21062079.

The product of its digits is 1280, while the sum is 23.

The square root of 42124154 is about 6490.3123191415. The cubic root of 42124154 is about 347.9448375594.

Adding to 42124154 its reverse (45142124), we get a palindrome (87266278).

The spelling of 42124154 in words is "forty-two million, one hundred twenty-four thousand, one hundred fifty-four".