1355020402 has 4 divisors (see below), whose sum is σ = 2032530606. Its totient is φ = 677510200.

The previous prime is 1355020393. The next prime is 1355020409. The reversal of 1355020402 is 2040205531.

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., 904265041 + 450755361 = 30071^2 + 21231^2 .

It is not an unprimeable number, because it can be changed into a prime (1355020409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338755099 + ... + 338755102.

Almost surely, 2^1355020402 is an apocalyptic number.

1355020402 is a deficient number, since it is larger than the sum of its proper divisors (677510204).

1355020402 is an equidigital number, since it uses as much as digits as its factorization.

1355020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677510203.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1355020402 is about 36810.6017609058. The cubic root of 1355020402 is about 1106.5777784407.

Adding to 1355020402 its reverse (2040205531), we get a palindrome (3395225933).

The spelling of 1355020402 in words is "one billion, three hundred fifty-five million, twenty thousand, four hundred two".