1205023402 has 16 divisors (see below), whose sum is σ = 2004184224. Its totient is φ = 538758000.

The previous prime is 1205023381. The next prime is 1205023409. The reversal of 1205023402 is 2043205021.

It is a self number, because there is not a number n which added to its sum of digits gives 1205023402.

It is not an unprimeable number, because it can be changed into a prime (1205023409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447624 + ... + 450307.

It is an arithmetic number, because the mean of its divisors is an integer number (125261514).

Almost surely, 2^1205023402 is an apocalyptic number.

1205023402 is a deficient number, since it is larger than the sum of its proper divisors (799160822).

1205023402 is a wasteful number, since it uses less digits than its factorization.

1205023402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898005.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1205023402 is about 34713.4469910437. The cubic root of 1205023402 is about 1064.1393274168.

Adding to 1205023402 its reverse (2043205021), we get a palindrome (3248228423).

It can be divided in two parts, 120502 and 3402, that added together give a square (123904 = 352²).

The spelling of 1205023402 in words is "one billion, two hundred five million, twenty-three thousand, four hundred two".