1453212140 has 24 divisors (see below), whose sum is σ = 3088517040. Its totient is φ = 574280768.

The previous prime is 1453212121. The next prime is 1453212149. The reversal of 1453212140 is 412123541.

It is a super-2 number, since 2×1453212140² = 4223651047686759200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1453212149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436055 + ... + 439374.

It is an arithmetic number, because the mean of its divisors is an integer number (128688210).

Almost surely, 2^1453212140 is an apocalyptic number.

1453212140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453212140 is an abundant number, since it is smaller than the sum of its proper divisors (1635304900).

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

1453212140 is a wasteful number, since it uses less digits than its factorization.

1453212140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875521 (or 875519 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1453212140 is about 38121.0196610741. The cubic root of 1453212140 is about 1132.6863645012.

Adding to 1453212140 its reverse (412123541), we get a palindrome (1865335681).

The spelling of 1453212140 in words is "one billion, four hundred fifty-three million, two hundred twelve thousand, one hundred forty".