1253353520442 has 16 divisors (see below), whose sum is σ = 2506722049440. Its totient is φ = 417782005392.

The previous prime is 1253353520389. The next prime is 1253353520473. The reversal of 1253353520442 is 2440253533521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253353520442.

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, 665109 + ... + 1717287.

It is an arithmetic number, because the mean of its divisors is an integer number (156670128090).

Almost surely, 2^{1253353520442} is an apocalyptic number.

1253353520442 is an abundant number, since it is smaller than the sum of its proper divisors (1253368528998).

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

1253353520442 is a wasteful number, since it uses less digits than its factorization.

1253353520442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250717.

The product of its (nonzero) digits is 432000, while the sum is 39.

The spelling of 1253353520442 in words is "one trillion, two hundred fifty-three billion, three hundred fifty-three million, five hundred twenty thousand, four hundred forty-two".