1232421543140 has 24 divisors (see below), whose sum is σ = 2595765032952. Its totient is φ = 491505799680.

The previous prime is 1232421543137. The next prime is 1232421543151. The reversal of 1232421543140 is 413451242321.

It can be written as a sum of positive squares in 4 ways, for example, as 31328292004 + 1201093251136 = 176998^2 + 1095944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1232421543097 and 1232421543106.

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, 91419191 + ... + 91432670.

It is an arithmetic number, because the mean of its divisors is an integer number (108156876373).

Almost surely, 2^{1232421543140} is an apocalyptic number.

1232421543140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232421543140 is an abundant number, since it is smaller than the sum of its proper divisors (1363343489812).

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

1232421543140 is a wasteful number, since it uses less digits than its factorization.

1232421543140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182852207 (or 182852205 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 1232421543140 its reverse (413451242321), we get a palindrome (1645872785461).

The spelling of 1232421543140 in words is "one trillion, two hundred thirty-two billion, four hundred twenty-one million, five hundred forty-three thousand, one hundred forty".