1205413400 has 24 divisors (see below), whose sum is σ = 2802586620. Its totient is φ = 482165280.

The previous prime is 1205413327. The next prime is 1205413403. The reversal of 1205413400 is 43145021.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205413403) 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, 3013334 + ... + 3013733.

Almost surely, 2^1205413400 is an apocalyptic number.

1205413400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205413400 is an abundant number, since it is smaller than the sum of its proper divisors (1597173220).

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

1205413400 is a wasteful number, since it uses less digits than its factorization.

1205413400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6027083 (or 6027074 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1205413400 is about 34719.0639274736. The cubic root of 1205413400 is about 1064.2541156289.

Adding to 1205413400 its reverse (43145021), we get a palindrome (1248558421).

The spelling of 1205413400 in words is "one billion, two hundred five million, four hundred thirteen thousand, four hundred".