42450154 has 4 divisors (see below), whose sum is σ = 63675234. Its totient is φ = 21225076.

The previous prime is 42450143. The next prime is 42450169. The reversal of 42450154 is 45105424.

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., 26265625 + 16184529 = 5125^2 + 4023^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612537 + ... + 10612540.

Almost surely, 2^42450154 is an apocalyptic number.

42450154 is a deficient number, since it is larger than the sum of its proper divisors (21225080).

42450154 is a wasteful number, since it uses less digits than its factorization.

42450154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21225079.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42450154 is about 6515.3782699088. The cubic root of 42450154 is about 348.8401169121.

Adding to 42450154 its reverse (45105424), we get a palindrome (87555578).

The spelling of 42450154 in words is "forty-two million, four hundred fifty thousand, one hundred fifty-four".