1245153400 has 24 divisors (see below), whose sum is σ = 2894982120. Its totient is φ = 498061280.

The previous prime is 1245153383. The next prime is 1245153439. The reversal of 1245153400 is 43515421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3112684 + ... + 3113083.

It is an arithmetic number, because the mean of its divisors is an integer number (120624255).

Almost surely, 2^1245153400 is an apocalyptic number.

1245153400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245153400 is an abundant number, since it is smaller than the sum of its proper divisors (1649828720).

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

1245153400 is a wasteful number, since it uses less digits than its factorization.

1245153400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225783 (or 6225774 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1245153400 is about 35286.7312172720. The cubic root of 1245153400 is about 1075.8233173596.

Adding to 1245153400 its reverse (43515421), we get a palindrome (1288668821).

The spelling of 1245153400 in words is "one billion, two hundred forty-five million, one hundred fifty-three thousand, four hundred".