140120420121 has 36 divisors (see below), whose sum is σ = 222559231440. Its totient is φ = 84886837200.

The previous prime is 140120420119. The next prime is 140120420123. The reversal of 140120420121 is 121024021041.

140120420121 is a `hidden beast` number, since 1 + 4 + 0 + 120 + 420 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (140120420119) and next prime (140120420123).

It is not a de Polignac number, because 140120420121 - 2¹ = 140120420119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140120420094 and 140120420103.

It is not an unprimeable number, because it can be changed into a prime (140120420123) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2783586 + ... + 2833476.

Almost surely, 2^140120420121 is an apocalyptic number.

140120420121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140120420121 is a deficient number, since it is larger than the sum of its proper divisors (82438811319).

140120420121 is a wasteful number, since it uses less digits than its factorization.

140120420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52498 (or 52484 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 140120420121 its reverse (121024021041), we get a palindrome (261144441162).

The spelling of 140120420121 in words is "one hundred forty billion, one hundred twenty million, four hundred twenty thousand, one hundred twenty-one".