42601840 has 20 divisors (see below), whose sum is σ = 99049464. Its totient is φ = 17040704.

The previous prime is 42601817. The next prime is 42601859. The reversal of 42601840 is 4810624.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266182 + ... + 266341.

Almost surely, 2^42601840 is an apocalyptic number.

42601840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42601840 is an abundant number, since it is smaller than the sum of its proper divisors (56447624).

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

42601840 is a wasteful number, since it uses less digits than its factorization.

42601840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532536 (or 532530 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 42601840 is about 6527.0085031353. The cubic root of 42601840 is about 349.2551233469.

The spelling of 42601840 in words is "forty-two million, six hundred one thousand, eight hundred forty".