1234342140 has 24 divisors (see below), whose sum is σ = 3456158160. Its totient is φ = 329157888.

The previous prime is 1234342121. The next prime is 1234342211. The reversal of 1234342140 is 412434321.

It is a self number, because there is not a number n which added to its sum of digits gives 1234342140.

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, 10286125 + ... + 10286244.

It is an arithmetic number, because the mean of its divisors is an integer number (144006590).

Almost surely, 2^1234342140 is an apocalyptic number.

1234342140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234342140 is an abundant number, since it is smaller than the sum of its proper divisors (2221816020).

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

1234342140 is a wasteful number, since it uses less digits than its factorization.

1234342140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572381 (or 20572379 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1234342140 is about 35133.2056607421. The cubic root of 1234342140 is about 1072.7005878862.

Adding to 1234342140 its reverse (412434321), we get a palindrome (1646776461).

The spelling of 1234342140 in words is "one billion, two hundred thirty-four million, three hundred forty-two thousand, one hundred forty".