1252302023640 has 128 divisors (see below), whose sum is σ = 3993380429760. Its totient is φ = 313080152064.

The previous prime is 1252302023597. The next prime is 1252302023647. The reversal of 1252302023640 is 463202032521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1252302023598 and 1252302023607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252302023647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670027 + ... + 1718586.

Almost surely, 2^{1252302023640} is an apocalyptic number.

1252302023640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252302023640 is an abundant number, since it is smaller than the sum of its proper divisors (2741078406120).

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

1252302023640 is a wasteful number, since it uses less digits than its factorization.

1252302023640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388901 (or 2388897 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 1252302023640 in words is "one trillion, two hundred fifty-two billion, three hundred two million, twenty-three thousand, six hundred forty".