1234020140 has 24 divisors (see below), whose sum is σ = 2743880832. Its totient is φ = 464572160.

The previous prime is 1234020133. The next prime is 1234020187. The reversal of 1234020140 is 410204321.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 1814396 + ... + 1815075.

It is an arithmetic number, because the mean of its divisors is an integer number (114328368).

Almost surely, 2^1234020140 is an apocalyptic number.

1234020140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234020140 is an abundant number, since it is smaller than the sum of its proper divisors (1509860692).

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

1234020140 is a wasteful number, since it uses less digits than its factorization.

1234020140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3629497 (or 3629495 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1234020140 is about 35128.6228024954. The cubic root of 1234020140 is about 1072.6073021275.

Adding to 1234020140 its reverse (410204321), we get a palindrome (1644224461).

The spelling of 1234020140 in words is "one billion, two hundred thirty-four million, twenty thousand, one hundred forty".