1252421497 has 8 divisors (see below), whose sum is σ = 1274424480. Its totient is φ = 1230444480.

The previous prime is 1252421491. The next prime is 1252421519. The reversal of 1252421497 is 7941242521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252421497 - 2¹¹ = 1252419449 is a prime.

It is a super-2 number, since 2×1252421497² = 3137119212295442018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252421491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108433 + ... + 119425.

It is an arithmetic number, because the mean of its divisors is an integer number (159303060).

Almost surely, 2^1252421497 is an apocalyptic number.

It is an amenable number.

1252421497 is a deficient number, since it is larger than the sum of its proper divisors (22002983).

1252421497 is a wasteful number, since it uses less digits than its factorization.

1252421497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12983.

The product of its digits is 40320, while the sum is 37.

The square root of 1252421497 is about 35389.5676294583. The cubic root of 1252421497 is about 1077.9124906160.

The spelling of 1252421497 in words is "one billion, two hundred fifty-two million, four hundred twenty-one thousand, four hundred ninety-seven".