1020402 has 24 divisors (see below), whose sum is σ = 2240784. Its totient is φ = 335544.

The previous prime is 1020401. The next prime is 1020407. The reversal of 1020402 is 2040201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1020401) 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, 1153 + ... + 1835.

It is an arithmetic number, because the mean of its divisors is an integer number (93366).

2^1020402 is an apocalyptic number.

1020402 is an abundant number, since it is smaller than the sum of its proper divisors (1220382).

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

1020402 is a wasteful number, since it uses less digits than its factorization.

1020402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1020402 is about 1010.1494938869. The cubic root of 1020402 is about 100.6754934782.

Adding to 1020402 its reverse (2040201), we get a palindrome (3060603).

The spelling of 1020402 in words is "one million, twenty thousand, four hundred two".