1402549021 has 2 divisors, whose sum is σ = 1402549022. Its totient is φ = 1402549020.

The previous prime is 1402548971. The next prime is 1402549051. The reversal of 1402549021 is 1209452041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002988900 + 399560121 = 31670^2 + 19989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402549021 - 2¹¹ = 1402546973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402549051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701274510 + 701274511.

It is an arithmetic number, because the mean of its divisors is an integer number (701274511).

Almost surely, 2^1402549021 is an apocalyptic number.

It is an amenable number.

1402549021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402549021 is an equidigital number, since it uses as much as digits as its factorization.

1402549021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1402549021 is about 37450.6211029937. The cubic root of 1402549021 is about 1119.3674736799.

The spelling of 1402549021 in words is "one billion, four hundred two million, five hundred forty-nine thousand, twenty-one".