42401040 has 80 divisors (see below), whose sum is σ = 143401536. Its totient is φ = 10278400.

The previous prime is 42401033. The next prime is 42401059. The reversal of 42401040 is 4010424.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 5391 + ... + 10670.

Almost surely, 2^42401040 is an apocalyptic number.

42401040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42401040 is an abundant number, since it is smaller than the sum of its proper divisors (101000496).

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

42401040 is a wasteful number, since it uses less digits than its factorization.

42401040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16088 (or 16082 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42401040 is about 6511.6080963154. The cubic root of 42401040 is about 348.7055312579.

Adding to 42401040 its reverse (4010424), we get a palindrome (46411464).

The spelling of 42401040 in words is "forty-two million, four hundred one thousand, forty".