1342052021 has 2 divisors, whose sum is σ = 1342052022. Its totient is φ = 1342052020.

The previous prime is 1342051999. The next prime is 1342052027. The reversal of 1342052021 is 1202502431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295280100 + 46771921 = 35990^2 + 6839^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342052021 - 2⁶ = 1342051957 is a prime.

It is a super-2 number, since 2×1342052021² = 3602207254140368882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1342051984 and 1342052002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1342052027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671026010 + 671026011.

It is an arithmetic number, because the mean of its divisors is an integer number (671026011).

Almost surely, 2^1342052021 is an apocalyptic number.

It is an amenable number.

1342052021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342052021 is an equidigital number, since it uses as much as digits as its factorization.

1342052021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1342052021 is about 36634.0281841896. The cubic root of 1342052021 is about 1103.0362454584.

Adding to 1342052021 its reverse (1202502431), we get a palindrome (2544554452).

The spelling of 1342052021 in words is "one billion, three hundred forty-two million, fifty-two thousand, twenty-one".