1021214140 has 24 divisors (see below), whose sum is σ = 2270700432. Its totient is φ = 384456960.

The previous prime is 1021214137. The next prime is 1021214141. The reversal of 1021214140 is 414121201.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021214141) 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, 1501446 + ... + 1502125.

It is an arithmetic number, because the mean of its divisors is an integer number (94612518).

Almost surely, 2^1021214140 is an apocalyptic number.

1021214140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021214140 is an abundant number, since it is smaller than the sum of its proper divisors (1249486292).

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

1021214140 is a wasteful number, since it uses less digits than its factorization.

1021214140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003597 (or 3003595 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1021214140 is about 31956.4412912327. The cubic root of 1021214140 is about 1007.0219567114.

Adding to 1021214140 its reverse (414121201), we get a palindrome (1435335341).

The spelling of 1021214140 in words is "one billion, twenty-one million, two hundred fourteen thousand, one hundred forty".