1205400102 has 8 divisors (see below), whose sum is σ = 2410800216. Its totient is φ = 401800032.

The previous prime is 1205400101. The next prime is 1205400121. The reversal of 1205400102 is 2010045021.

1205400102 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1205400102 is an admirable number.

It is a super-2 number, since 2×1205400102² = 2905978811803220808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205400101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100450003 + ... + 100450014.

It is an arithmetic number, because the mean of its divisors is an integer number (301350027).

Almost surely, 2^1205400102 is an apocalyptic number.

1205400102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1205400102 is a wasteful number, since it uses less digits than its factorization.

1205400102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200900022.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1205400102 is about 34718.8724183260. The cubic root of 1205400102 is about 1064.2502020329.

Adding to 1205400102 its reverse (2010045021), we get a palindrome (3215445123).

The spelling of 1205400102 in words is "one billion, two hundred five million, four hundred thousand, one hundred two".