1442257020 has 72 divisors (see below), whose sum is σ = 4515987840. Its totient is φ = 372193920.

The previous prime is 1442257007. The next prime is 1442257027. The reversal of 1442257020 is 207522441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442257027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123655 + ... + 134814.

Almost surely, 2^1442257020 is an apocalyptic number.

1442257020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442257020 is an abundant number, since it is smaller than the sum of its proper divisors (3073730820).

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

1442257020 is a wasteful number, since it uses less digits than its factorization.

1442257020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258515 (or 258510 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 1442257020 is about 37977.0591278472. The cubic root of 1442257020 is about 1129.8329092224.

Adding to 1442257020 its reverse (207522441), we get a palindrome (1649779461).

The spelling of 1442257020 in words is "one billion, four hundred forty-two million, two hundred fifty-seven thousand, twenty".