1442987153 has 2 divisors, whose sum is σ = 1442987154. Its totient is φ = 1442987152.

The previous prime is 1442987113. The next prime is 1442987197. The reversal of 1442987153 is 3517892441.

It is an a-pointer prime, because the next prime (1442987197) can be obtained adding 1442987153 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861598609 + 581388544 = 29353^2 + 24112^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442987153 - 2²⁰ = 1441938577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1442987113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721493576 + 721493577.

It is an arithmetic number, because the mean of its divisors is an integer number (721493577).

Almost surely, 2^1442987153 is an apocalyptic number.

It is an amenable number.

1442987153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442987153 is an equidigital number, since it uses as much as digits as its factorization.

1442987153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 1442987153 is about 37986.6707280330. The cubic root of 1442987153 is about 1130.0235338509.

The spelling of 1442987153 in words is "one billion, four hundred forty-two million, nine hundred eighty-seven thousand, one hundred fifty-three".