42153145 has 8 divisors (see below), whose sum is σ = 50621256. Its totient is φ = 33697536.

The previous prime is 42153131. The next prime is 42153157. The reversal of 42153145 is 54135124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 110889 + 42042256 = 333^2 + 6484^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42153145 - 2¹¹ = 42151097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7729 + ... + 12001.

It is an arithmetic number, because the mean of its divisors is an integer number (6327657).

Almost surely, 2^42153145 is an apocalyptic number.

It is an amenable number.

42153145 is a deficient number, since it is larger than the sum of its proper divisors (8468111).

42153145 is a wasteful number, since it uses less digits than its factorization.

42153145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251.

The product of its digits is 2400, while the sum is 25.

The square root of 42153145 is about 6492.5453406195. The cubic root of 42153145 is about 348.0246409865.

Adding to 42153145 its reverse (54135124), we get a palindrome (96288269).

The spelling of 42153145 in words is "forty-two million, one hundred fifty-three thousand, one hundred forty-five".