42066420 has 48 divisors (see below), whose sum is σ = 128495808. Its totient is φ = 10197760.

The previous prime is 42066407. The next prime is 42066433. The reversal of 42066420 is 2466024.

It is an interprime number because it is at equal distance from previous prime (42066407) and next prime (42066433).

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, 31209 + ... + 32528.

It is an arithmetic number, because the mean of its divisors is an integer number (2676996).

Almost surely, 2^42066420 is an apocalyptic number.

It is an amenable number.

42066420 is an abundant number, since it is smaller than the sum of its proper divisors (86429388).

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

42066420 is a wasteful number, since it uses less digits than its factorization.

42066420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63760 (or 63758 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 42066420 is about 6485.8630882867. The cubic root of 42066420 is about 347.7858042434.

It can be divided in two parts, 42066 and 420, that added together give a triangular number (42486 = T₂₉₁).

The spelling of 42066420 in words is "forty-two million, sixty-six thousand, four hundred twenty".