42001453 has 4 divisors (see below), whose sum is σ = 45232348. Its totient is φ = 38770560.

The previous prime is 42001447. The next prime is 42001469. The reversal of 42001453 is 35410024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 25371369 = 4078^2 + 5037^2 .

It is a cyclic number.

It is not a de Polignac number, because 42001453 - 2⁹ = 42000941 is a prime.

It is a super-2 number, since 2×42001453² = 3528244108222418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42001453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615428 + ... + 1615453.

It is an arithmetic number, because the mean of its divisors is an integer number (11308087).

Almost surely, 2^42001453 is an apocalyptic number.

It is an amenable number.

42001453 is a deficient number, since it is larger than the sum of its proper divisors (3230895).

42001453 is a wasteful number, since it uses less digits than its factorization.

42001453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230894.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 42001453 is about 6480.8527988221. The cubic root of 42001453 is about 347.6066729081.

Adding to 42001453 its reverse (35410024), we get a palindrome (77411477).

The spelling of 42001453 in words is "forty-two million, one thousand, four hundred fifty-three".