1234453540 has 12 divisors (see below), whose sum is σ = 2592352476. Its totient is φ = 493781408.

The previous prime is 1234453537. The next prime is 1234453553. The reversal of 1234453540 is 453544321.

It can be written as a sum of positive squares in 2 ways, for example, as 674752576 + 559700964 = 25976^2 + 23658^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30861319 + ... + 30861358.

It is an arithmetic number, because the mean of its divisors is an integer number (216029373).

Almost surely, 2^1234453540 is an apocalyptic number.

1234453540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234453540 is an abundant number, since it is smaller than the sum of its proper divisors (1357898936).

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

1234453540 is a wasteful number, since it uses less digits than its factorization.

1234453540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61722686 (or 61722684 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1234453540 is about 35134.7910197286. The cubic root of 1234453540 is about 1072.7328575049.

Adding to 1234453540 its reverse (453544321), we get a palindrome (1687997861).

The spelling of 1234453540 in words is "one billion, two hundred thirty-four million, four hundred fifty-three thousand, five hundred forty".