1021342055 has 16 divisors (see below), whose sum is σ = 1291511520. Its totient is φ = 773232768.

The previous prime is 1021342033. The next prime is 1021342057. The reversal of 1021342055 is 5502431201.

It is a cyclic number.

It is not a de Polignac number, because 1021342055 - 2¹² = 1021337959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021342055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021342057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90929 + ... + 101541.

It is an arithmetic number, because the mean of its divisors is an integer number (80719470).

Almost surely, 2^1021342055 is an apocalyptic number.

1021342055 is a deficient number, since it is larger than the sum of its proper divisors (270169465).

1021342055 is a wasteful number, since it uses less digits than its factorization.

1021342055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1021342055 is about 31958.4426247588. The cubic root of 1021342055 is about 1007.0640007289.

Adding to 1021342055 its reverse (5502431201), we get a palindrome (6523773256).

The spelling of 1021342055 in words is "one billion, twenty-one million, three hundred forty-two thousand, fifty-five".