1155402 has 12 divisors (see below), whose sum is σ = 2503410. Its totient is φ = 385128.

The previous prime is 1155379. The next prime is 1155403. The reversal of 1155402 is 2045511.

It can be written as a sum of positive squares in only one way, i.e., 904401 + 251001 = 951^2 + 501^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 64189 = 1155402 / (1 + 1 + 5 + 5 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (1155403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32077 + ... + 32112.

2^1155402 is an apocalyptic number.

1155402 is an abundant number, since it is smaller than the sum of its proper divisors (1348008).

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

1155402 is a wasteful number, since it uses less digits than its factorization.

1155402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64197 (or 64194 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1155402 is about 1074.8962740655. The cubic root of 1155402 is about 104.9327460478.

It can be divided in two parts, 1 and 155402, that added together give a triangular number (155403 = T₅₅₇).

The spelling of 1155402 in words is "one million, one hundred fifty-five thousand, four hundred two".