42263661 has 16 divisors (see below), whose sum is σ = 62975808. Its totient is φ = 24988800.

The previous prime is 42263653. The next prime is 42263677. The reversal of 42263661 is 16636224.

It is not a de Polignac number, because 42263661 - 2³ = 42263653 is a prime.

It is a super-2 number, since 2×42263661² = 3572434082245842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42263621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14266 + ... + 16971.

It is an arithmetic number, because the mean of its divisors is an integer number (3935988).

Almost surely, 2^42263661 is an apocalyptic number.

42263661 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42263661 is a deficient number, since it is larger than the sum of its proper divisors (20712147).

42263661 is a wasteful number, since it uses less digits than its factorization.

42263661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31292.

The product of its digits is 10368, while the sum is 30.

The square root of 42263661 is about 6501.0507612231. The cubic root of 42263661 is about 348.3285228357.

Adding to 42263661 its reverse (16636224), we get a palindrome (58899885).

It can be divided in two parts, 42263 and 661, that added together give a palindrome (42924).

The spelling of 42263661 in words is "forty-two million, two hundred sixty-three thousand, six hundred sixty-one".