406746642 has 24 divisors (see below), whose sum is σ = 858566736. Its totient is φ = 128445624.

The previous prime is 406746631. The next prime is 406746653. The reversal of 406746642 is 246647604.

It is an interprime number because it is at equal distance from previous prime (406746631) and next prime (406746653).

It is a self number, because there is not a number n which added to its sum of digits gives 406746642.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91728 + ... + 96059.

It is an arithmetic number, because the mean of its divisors is an integer number (35773614).

Almost surely, 2^406746642 is an apocalyptic number.

406746642 is an abundant number, since it is smaller than the sum of its proper divisors (451820094).

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

406746642 is a wasteful number, since it uses less digits than its factorization.

406746642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187830 (or 187811 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 39.

The square root of 406746642 is about 20167.9607794145. The cubic root of 406746642 is about 740.9256993219.

The spelling of 406746642 in words is "four hundred six million, seven hundred forty-six thousand, six hundred forty-two".