1201434440140 has 48 divisors (see below), whose sum is σ = 2752951370400. Its totient is φ = 436794094080.

The previous prime is 1201434440137. The next prime is 1201434440147. The reversal of 1201434440140 is 410444341021.

It is a junction number, because it is equal to n+sod(n) for n = 1201434440099 and 1201434440108.

It is not an unprimeable number, because it can be changed into a prime (1201434440147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 491536 + ... + 1626184.

It is an arithmetic number, because the mean of its divisors is an integer number (57353153550).

Almost surely, 2^{1201434440140} is an apocalyptic number.

1201434440140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201434440140 is an abundant number, since it is smaller than the sum of its proper divisors (1551516930260).

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

1201434440140 is a wasteful number, since it uses less digits than its factorization.

1201434440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139482 (or 1139480 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1201434440140 its reverse (410444341021), we get a palindrome (1611878781161).

The spelling of 1201434440140 in words is "one trillion, two hundred one billion, four hundred thirty-four million, four hundred forty thousand, one hundred forty".