140420230431420 has 24 divisors (see below), whose sum is σ = 393176645208144. Its totient is φ = 37445394781696.

The previous prime is 140420230431401. The next prime is 140420230431427. The reversal of 140420230431420 is 24134032024041.

It is a super-2 number, since 2×140420230431420² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140420230431427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170168586869 + ... + 1170168586988.

It is an arithmetic number, because the mean of its divisors is an integer number (16382360217006).

Almost surely, 2^{140420230431420} is an apocalyptic number.

140420230431420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140420230431420 is an abundant number, since it is smaller than the sum of its proper divisors (252756414776724).

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

140420230431420 is a wasteful number, since it uses less digits than its factorization.

140420230431420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340337173869 (or 2340337173867 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 140420230431420 its reverse (24134032024041), we get a palindrome (164554262455461).

The spelling of 140420230431420 in words is "one hundred forty trillion, four hundred twenty billion, two hundred thirty million, four hundred thirty-one thousand, four hundred twenty".