1021414140 has 72 divisors (see below), whose sum is σ = 3173880528. Its totient is φ = 265731840.

The previous prime is 1021414127. The next prime is 1021414151. The reversal of 1021414140 is 414141201.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61822 + ... + 76581.

It is an arithmetic number, because the mean of its divisors is an integer number (44081674).

Almost surely, 2^1021414140 is an apocalyptic number.

1021414140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021414140 is an abundant number, since it is smaller than the sum of its proper divisors (2152466388).

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

1021414140 is a wasteful number, since it uses less digits than its factorization.

1021414140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138459 (or 138454 counting only the distinct ones).

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

The square root of 1021414140 is about 31959.5703976133. The cubic root of 1021414140 is about 1007.0876925960.

Adding to 1021414140 its reverse (414141201), we get a palindrome (1435555341).

The spelling of 1021414140 in words is "one billion, twenty-one million, four hundred fourteen thousand, one hundred forty".