1015420455 has 112 divisors (see below), whose sum is σ = 2211672384. Its totient is φ = 436700160.

The previous prime is 1015420451. The next prime is 1015420463. The reversal of 1015420455 is 5540245101.

It is not a de Polignac number, because 1015420455 - 2² = 1015420451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015420451) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 432585 + ... + 434925.

Almost surely, 2^1015420455 is an apocalyptic number.

1015420455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1015420455 is an abundant number, since it is smaller than the sum of its proper divisors (1196251929).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1015420455 is an equidigital number, since it uses as much as digits as its factorization.

1015420455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388 (or 2373 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1015420455 is about 31865.6626323697. The cubic root of 1015420455 is about 1005.1139545545.

Adding to 1015420455 its reverse (5540245101), we get a palindrome (6555665556).

The spelling of 1015420455 in words is "one billion, fifteen million, four hundred twenty thousand, four hundred fifty-five".