42461431 has 4 divisors (see below), whose sum is σ = 42478000. Its totient is φ = 42444864.

The previous prime is 42461417. The next prime is 42461437. The reversal of 42461431 is 13416424.

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

It is a cyclic number.

It is not a de Polignac number, because 42461431 - 2¹¹ = 42459383 is a prime.

It is a super-2 number, since 2×42461431² = 3605946245135522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42461396 and 42461405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42461437) 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, 3531 + ... + 9868.

It is an arithmetic number, because the mean of its divisors is an integer number (10619500).

Almost surely, 2^42461431 is an apocalyptic number.

42461431 is a deficient number, since it is larger than the sum of its proper divisors (16569).

42461431 is a wasteful number, since it uses less digits than its factorization.

42461431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16568.

The product of its digits is 2304, while the sum is 25.

The square root of 42461431 is about 6516.2436265075. The cubic root of 42461431 is about 348.8710042889.

Adding to 42461431 its reverse (13416424), we get a palindrome (55877855).

The spelling of 42461431 in words is "forty-two million, four hundred sixty-one thousand, four hundred thirty-one".