42451461 has 24 divisors (see below), whose sum is σ = 66437280. Its totient is φ = 25965216.

The previous prime is 42451459. The next prime is 42451477. The reversal of 42451461 is 16415424.

It is not a de Polignac number, because 42451461 - 2¹ = 42451459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42451421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19930 + ... + 21956.

It is an arithmetic number, because the mean of its divisors is an integer number (2768220).

Almost surely, 2^42451461 is an apocalyptic number.

It is an amenable number.

42451461 is a deficient number, since it is larger than the sum of its proper divisors (23985819).

42451461 is a wasteful number, since it uses less digits than its factorization.

42451461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225 (or 2222 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 42451461 is about 6515.4785702970. The cubic root of 42451461 is about 348.8436970276.

Adding to 42451461 its reverse (16415424), we get a palindrome (58866885).

The spelling of 42451461 in words is "forty-two million, four hundred fifty-one thousand, four hundred sixty-one".