42154162 has 4 divisors (see below), whose sum is σ = 63231246. Its totient is φ = 21077080.

The previous prime is 42154153. The next prime is 42154181. The reversal of 42154162 is 26145124.

It is a happy number.

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., 34586161 + 7568001 = 5881^2 + 2751^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10538539 + ... + 10538542.

Almost surely, 2^42154162 is an apocalyptic number.

42154162 is a deficient number, since it is larger than the sum of its proper divisors (21077084).

42154162 is a wasteful number, since it uses less digits than its factorization.

42154162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21077083.

The product of its digits is 1920, while the sum is 25.

The square root of 42154162 is about 6492.6236607399. The cubic root of 42154162 is about 348.0274398146.

Adding to 42154162 its reverse (26145124), we get a palindrome (68299286).

The spelling of 42154162 in words is "forty-two million, one hundred fifty-four thousand, one hundred sixty-two".