42450415 has 12 divisors (see below), whose sum is σ = 59257656. Its totient is φ = 29108688.

The previous prime is 42450391. The next prime is 42450451. The reversal of 42450415 is 51405424.

It is a happy number.

It is not a de Polignac number, because 42450415 - 2⁵ = 42450383 is a prime.

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 42450415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86389 + ... + 86878.

It is an arithmetic number, because the mean of its divisors is an integer number (4938138).

Almost surely, 2^42450415 is an apocalyptic number.

42450415 is a deficient number, since it is larger than the sum of its proper divisors (16807241).

42450415 is a wasteful number, since it uses less digits than its factorization.

42450415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173286 (or 173279 counting only the distinct ones).

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

The square root of 42450415 is about 6515.3982994135. The cubic root of 42450415 is about 348.8408318454.

Adding to 42450415 its reverse (51405424), we get a palindrome (93855839).

The spelling of 42450415 in words is "forty-two million, four hundred fifty thousand, four hundred fifteen".