42303840 has 96 divisors (see below), whose sum is σ = 137604096. Its totient is φ = 10913280.

The previous prime is 42303829. The next prime is 42303853. The reversal of 42303840 is 4830324.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×42303840² = 3579229757491200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42303840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13459 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (1433376).

Almost surely, 2^42303840 is an apocalyptic number.

42303840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42303840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68802048).

42303840 is an abundant number, since it is smaller than the sum of its proper divisors (95300256).

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

42303840 is a wasteful number, since it uses less digits than its factorization.

42303840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2892 (or 2884 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 42303840 is about 6504.1402198907. The cubic root of 42303840 is about 348.4388702648.

The spelling of 42303840 in words is "forty-two million, three hundred three thousand, eight hundred forty".