42687450040 has 32 divisors (see below), whose sum is σ = 97480302480. Its totient is φ = 16820128512.

The previous prime is 42687449969. The next prime is 42687450049. The reversal of 42687450040 is 4005478624.

It is a happy number.

It is a super-3 number, since 3×42687450040³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 42687449975 and 42687450002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42687450049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7961397 + ... + 7966756.

Almost surely, 2^42687450040 is an apocalyptic number.

42687450040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42687450040 is an abundant number, since it is smaller than the sum of its proper divisors (54792852440).

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

42687450040 is a wasteful number, since it uses less digits than its factorization.

42687450040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15928231 (or 15928227 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 42687450040 in words is "forty-two billion, six hundred eighty-seven million, four hundred fifty thousand, forty".