7142950921 has 2 divisors, whose sum is σ = 7142950922. Its totient is φ = 7142950920.

The previous prime is 7142950907. The next prime is 7142950943. The reversal of 7142950921 is 1290592417.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6412005625 + 730945296 = 80075^2 + 27036^2 .

It is a cyclic number.

It is not a de Polignac number, because 7142950921 - 2¹¹ = 7142948873 is a prime.

It is a super-3 number, since 3×7142950921³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7142950951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571475460 + 3571475461.

It is an arithmetic number, because the mean of its divisors is an integer number (3571475461).

Almost surely, 2^7142950921 is an apocalyptic number.

It is an amenable number.

7142950921 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142950921 is an equidigital number, since it uses as much as digits as its factorization.

7142950921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 7142950921 is about 84515.9802700057. The cubic root of 7142950921 is about 1925.8652136700.

The spelling of 7142950921 in words is "seven billion, one hundred forty-two million, nine hundred fifty thousand, nine hundred twenty-one".