1421022140 has 24 divisors (see below), whose sum is σ = 2990811600. Its totient is φ = 567139328.

The previous prime is 1421022091. The next prime is 1421022143. The reversal of 1421022140 is 412201241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421022143) 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, 70142 + ... + 88101.

It is an arithmetic number, because the mean of its divisors is an integer number (124617150).

Almost surely, 2^1421022140 is an apocalyptic number.

1421022140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421022140 is an abundant number, since it is smaller than the sum of its proper divisors (1569789460).

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

1421022140 is a wasteful number, since it uses less digits than its factorization.

1421022140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158701 (or 158699 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1421022140 is about 37696.4473127110. The cubic root of 1421022140 is about 1124.2604891383.

Adding to 1421022140 its reverse (412201241), we get a palindrome (1833223381).

The spelling of 1421022140 in words is "one billion, four hundred twenty-one million, twenty-two thousand, one hundred forty".