1203406040 has 64 divisors (see below), whose sum is σ = 2948508000. Its totient is φ = 440294400.

The previous prime is 1203406037. The next prime is 1203406049. The reversal of 1203406040 is 406043021.

It is a happy number.

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 (1203406049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5261 + ... + 49340.

Almost surely, 2^1203406040 is an apocalyptic number.

1203406040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203406040 is an abundant number, since it is smaller than the sum of its proper divisors (1745101960).

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

1203406040 is a wasteful number, since it uses less digits than its factorization.

1203406040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54660 (or 54656 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1203406040 is about 34690.1432686577. The cubic root of 1203406040 is about 1063.6630243308.

Adding to 1203406040 its reverse (406043021), we get a palindrome (1609449061).

The spelling of 1203406040 in words is "one billion, two hundred three million, four hundred six thousand, forty".