1420121142 has 48 divisors (see below), whose sum is σ = 3533325120. Its totient is φ = 407689200.

The previous prime is 1420121117. The next prime is 1420121159. The reversal of 1420121142 is 2411210241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184984 + ... + 192507.

It is an arithmetic number, because the mean of its divisors is an integer number (73610940).

Almost surely, 2^1420121142 is an apocalyptic number.

1420121142 is an abundant number, since it is smaller than the sum of its proper divisors (2113203978).

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

1420121142 is a wasteful number, since it uses less digits than its factorization.

1420121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377529 (or 377526 counting only the distinct ones).

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

The square root of 1420121142 is about 37684.4947159969. The cubic root of 1420121142 is about 1124.0228267338.

Adding to 1420121142 its reverse (2411210241), we get a palindrome (3831331383).

The spelling of 1420121142 in words is "one billion, four hundred twenty million, one hundred twenty-one thousand, one hundred forty-two".