2006402 has 4 divisors (see below), whose sum is σ = 3009606. Its totient is φ = 1003200.

The previous prime is 2006393. The next prime is 2006429. The reversal of 2006402 is 2046002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1442401 + 564001 = 1201^2 + 751^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501599 + ... + 501602.

2^2006402 is an apocalyptic number.

2006402 is a deficient number, since it is larger than the sum of its proper divisors (1003204).

2006402 is a wasteful number, since it uses less digits than its factorization.

2006402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003203.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2006402 is about 1416.4752027480. The cubic root of 2006402 is about 126.1263953794.

The spelling of 2006402 in words is "two million, six thousand, four hundred two".