42418154 has 4 divisors (see below), whose sum is σ = 63627234. Its totient is φ = 21209076.

The previous prime is 42418153. The next prime is 42418157. The reversal of 42418154 is 45181424.

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., 34164025 + 8254129 = 5845^2 + 2873^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42418153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10604537 + ... + 10604540.

Almost surely, 2^42418154 is an apocalyptic number.

42418154 is a deficient number, since it is larger than the sum of its proper divisors (21209080).

42418154 is a wasteful number, since it uses less digits than its factorization.

42418154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21209079.

The product of its digits is 5120, while the sum is 29.

The square root of 42418154 is about 6512.9220784530. The cubic root of 42418154 is about 348.7524400424.

Adding to 42418154 its reverse (45181424), we get a palindrome (87599578).

The spelling of 42418154 in words is "forty-two million, four hundred eighteen thousand, one hundred fifty-four".