42166451540 has 48 divisors (see below), whose sum is σ = 92465718912. Its totient is φ = 16121694336.

The previous prime is 42166451527. The next prime is 42166451557. The reversal of 42166451540 is 4515466124.

It is a happy number.

42166451540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×42166451540⁴ (a number of 44 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42166451494 and 42166451503.

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, 624302 + ... + 688538.

It is an arithmetic number, because the mean of its divisors is an integer number (1926369144).

Almost surely, 2^42166451540 is an apocalyptic number.

It is an amenable number.

42166451540 is an abundant number, since it is smaller than the sum of its proper divisors (50299267372).

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

42166451540 is a wasteful number, since it uses less digits than its factorization.

42166451540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65696 (or 65694 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 42166451540 in words is "forty-two billion, one hundred sixty-six million, four hundred fifty-one thousand, five hundred forty".