1282520090 has 16 divisors (see below), whose sum is σ = 2309567688. Its totient is φ = 512778816.

The previous prime is 1282520047. The next prime is 1282520101. The reversal of 1282520090 is 900252821.

It can be written as a sum of positive squares in 4 ways, for example, as 894548281 + 387971809 = 29909^2 + 19697^2 .

It is a super-3 number, since 3×1282520090³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4157 + ... + 50816.

Almost surely, 2^1282520090 is an apocalyptic number.

1282520090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1282520090 is a deficient number, since it is larger than the sum of its proper divisors (1027047598).

1282520090 is a wasteful number, since it uses less digits than its factorization.

1282520090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57313.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1282520090 is about 35812.2896503421. The cubic root of 1282520090 is about 1086.4791395866.

The spelling of 1282520090 in words is "one billion, two hundred eighty-two million, five hundred twenty thousand, ninety".