1203453140 has 24 divisors (see below), whose sum is σ = 2568684552. Its totient is φ = 473489280.

The previous prime is 1203453131. The next prime is 1203453151. The reversal of 1203453140 is 413543021.

It can be written as a sum of positive squares in 4 ways, for example, as 138344644 + 1065108496 = 11762^2 + 32636^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491999 + ... + 494438.

It is an arithmetic number, because the mean of its divisors is an integer number (107028523).

Almost surely, 2^1203453140 is an apocalyptic number.

1203453140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203453140 is an abundant number, since it is smaller than the sum of its proper divisors (1365231412).

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

1203453140 is a wasteful number, since it uses less digits than its factorization.

1203453140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986507 (or 986505 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1203453140 is about 34690.8221292030. The cubic root of 1203453140 is about 1063.6769010200.

Adding to 1203453140 its reverse (413543021), we get a palindrome (1616996161).

The spelling of 1203453140 in words is "one billion, two hundred three million, four hundred fifty-three thousand, one hundred forty".