42703640 has 128 divisors (see below), whose sum is σ = 120960000. Its totient is φ = 13229568.

The previous prime is 42703607. The next prime is 42703649. The reversal of 42703640 is 4630724.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42703649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122186 + ... + 122534.

It is an arithmetic number, because the mean of its divisors is an integer number (945000).

Almost surely, 2^42703640 is an apocalyptic number.

42703640 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 42703640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60480000).

42703640 is an abundant number, since it is smaller than the sum of its proper divisors (78256360).

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

42703640 is a wasteful number, since it uses less digits than its factorization.

42703640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 42703640 is about 6534.8022158287. The cubic root of 42703640 is about 349.5330916959.

The spelling of 42703640 in words is "forty-two million, seven hundred three thousand, six hundred forty".