42763240 has 32 divisors (see below), whose sum is σ = 103619880. Its totient is φ = 15789312.

The previous prime is 42763183. The next prime is 42763261. The reversal of 42763240 is 4236724.

It can be written as a sum of positive squares in 4 ways, for example, as 38019556 + 4743684 = 6166^2 + 2178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42763199 and 42763208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40599 + ... + 41638.

Almost surely, 2^42763240 is an apocalyptic number.

42763240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42763240 is an abundant number, since it is smaller than the sum of its proper divisors (60856640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42763240 is a wasteful number, since it uses less digits than its factorization.

42763240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82261 (or 82257 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 42763240 is about 6539.3608250348. The cubic root of 42763240 is about 349.6956265383.

Adding to 42763240 its reverse (4236724), we get a palindrome (46999964).

The spelling of 42763240 in words is "forty-two million, seven hundred sixty-three thousand, two hundred forty".