1020132455 has 16 divisors (see below), whose sum is σ = 1283143680. Its totient is φ = 777103008.

The previous prime is 1020132437. The next prime is 1020132457. The reversal of 1020132455 is 5542310201.

It is a cyclic number.

It is not a de Polignac number, because 1020132455 - 2¹² = 1020128359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1020132455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020132457) 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, 5756 + ... + 45534.

It is an arithmetic number, because the mean of its divisors is an integer number (80196480).

Almost surely, 2^1020132455 is an apocalyptic number.

1020132455 is a deficient number, since it is larger than the sum of its proper divisors (263011225).

1020132455 is a wasteful number, since it uses less digits than its factorization.

1020132455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40030.

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

The square root of 1020132455 is about 31939.5124414885. The cubic root of 1020132455 is about 1006.6662802921. Note that the first 3 decimals are identical.

Adding to 1020132455 its reverse (5542310201), we get a palindrome (6562442656).

The spelling of 1020132455 in words is "one billion, twenty million, one hundred thirty-two thousand, four hundred fifty-five".