1005402 has 32 divisors (see below), whose sum is σ = 2124864. Its totient is φ = 316800.

The previous prime is 1005391. The next prime is 1005409. The reversal of 1005402 is 2045001.

It is not an unprimeable number, because it can be changed into a prime (1005409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14973 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (66402).

2^1005402 is an apocalyptic number.

1005402 is an abundant number, since it is smaller than the sum of its proper divisors (1119462).

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

1005402 is a wasteful number, since it uses less digits than its factorization.

1005402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1005402 is about 1002.6973621188. The cubic root of 1005402 is about 100.1797433962.

The spelling of 1005402 in words is "one million, five thousand, four hundred two".