42453515 has 32 divisors (see below), whose sum is σ = 58181760. Its totient is φ = 29500416.

The previous prime is 42453503. The next prime is 42453517. The reversal of 42453515 is 51535424.

It is a cyclic number.

It is not a de Polignac number, because 42453515 - 2⁶ = 42453451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42453517) 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, 108941 + ... + 109329.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^42453515 is an apocalyptic number.

42453515 is a deficient number, since it is larger than the sum of its proper divisors (15728245).

42453515 is a wasteful number, since it uses less digits than its factorization.

42453515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503.

The product of its digits is 12000, while the sum is 29.

The square root of 42453515 is about 6515.6361930359. The cubic root of 42453515 is about 348.8493231661.

Adding to 42453515 its reverse (51535424), we get a palindrome (93988939).

The spelling of 42453515 in words is "forty-two million, four hundred fifty-three thousand, five hundred fifteen".