1671642 has 24 divisors (see below), whose sum is σ = 4139616. Its totient is φ = 477576.

The previous prime is 1671641. The next prime is 1671643. The reversal of 1671642 is 2461761.

1671642 is a `hidden beast` number, since 16 + 7 + 1 + 642 = 666.

It is an interprime number because it is at equal distance from previous prime (1671641) and next prime (1671643).

It is not an unprimeable number, because it can be changed into a prime (1671641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6508 + ... + 6759.

It is an arithmetic number, because the mean of its divisors is an integer number (172484).

2^1671642 is an apocalyptic number.

1671642 is an abundant number, since it is smaller than the sum of its proper divisors (2467974).

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

1671642 is a wasteful number, since it uses less digits than its factorization.

1671642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13282 (or 13279 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1671642 is about 1292.9199511184. The cubic root of 1671642 is about 118.6809711466.

The spelling of 1671642 in words is "one million, six hundred seventy-one thousand, six hundred forty-two".