42453505 has 32 divisors (see below), whose sum is σ = 57576960. Its totient is φ = 29859840.

The previous prime is 42453503. The next prime is 42453517. The reversal of 42453505 is 50535424.

42453505 is a nontrivial binomial coefficient, being equal to C(9215, 2).

It is not a de Polignac number, because 42453505 - 2¹ = 42453503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42453503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156520 + ... + 156790.

It is an arithmetic number, because the mean of its divisors is an integer number (1799280).

Almost surely, 2^42453505 is an apocalyptic number.

42453505 is the 9214-th triangular number.

42453505 is the 3072-nd centered nonagonal number.

It is an amenable number.

42453505 is a deficient number, since it is larger than the sum of its proper divisors (15123455).

42453505 is a wasteful number, since it uses less digits than its factorization.

42453505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 42453505 is about 6515.6354256511. The cubic root of 42453505 is about 348.8492957754.

Adding to 42453505 its reverse (50535424), we get a palindrome (92988929).

It can be divided in two parts, 4245 and 3505, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 42453505 in words is "forty-two million, four hundred fifty-three thousand, five hundred five".