42150454 has 4 divisors (see below), whose sum is σ = 63225684. Its totient is φ = 21075226.

The previous prime is 42150439. The next prime is 42150457. The reversal of 42150454 is 45405124.

It is a happy number.

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

It is a super-2 number, since 2×42150454² = 3553321544812232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42150457) by changing a digit.

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, 10537612 + ... + 10537615.

It is an arithmetic number, because the mean of its divisors is an integer number (15806421).

Almost surely, 2^42150454 is an apocalyptic number.

42150454 is a deficient number, since it is larger than the sum of its proper divisors (21075230).

42150454 is a wasteful number, since it uses less digits than its factorization.

42150454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21075229.

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

The square root of 42150454 is about 6492.3380996371. The cubic root of 42150454 is about 348.0172350208.

Adding to 42150454 its reverse (45405124), we get a palindrome (87555578).

The spelling of 42150454 in words is "forty-two million, one hundred fifty thousand, four hundred fifty-four".