1642051 has 2 divisors, whose sum is σ = 1642052. Its totient is φ = 1642050.

The previous prime is 1642049. The next prime is 1642057. The reversal of 1642051 is 1502461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1642051 - 2¹ = 1642049 is a prime.

Together with 1642049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1642057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821025 + 821026.

It is an arithmetic number, because the mean of its divisors is an integer number (821026).

2^1642051 is an apocalyptic number.

1642051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642051 is an equidigital number, since it uses as much as digits as its factorization.

1642051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1642051 is about 1281.4253782410. The cubic root of 1642051 is about 117.9765106936.

It can be divided in two parts, 16420 and 51, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 1642051 in words is "one million, six hundred forty-two thousand, fifty-one".