1020331542 has 16 divisors (see below), whose sum is σ = 2043134640. Its totient is φ = 339698592.

The previous prime is 1020331537. The next prime is 1020331547. The reversal of 1020331542 is 2451330201.

It is an interprime number because it is at equal distance from previous prime (1020331537) and next prime (1020331547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020331547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97593 + ... + 107540.

It is an arithmetic number, because the mean of its divisors is an integer number (127695915).

Almost surely, 2^1020331542 is an apocalyptic number.

1020331542 is an abundant number, since it is smaller than the sum of its proper divisors (1022803098).

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

1020331542 is a wasteful number, since it uses less digits than its factorization.

1020331542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205967.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1020331542 is about 31942.6289149782. The cubic root of 1020331542 is about 1006.7317623553.

Adding to 1020331542 its reverse (2451330201), we get a palindrome (3471661743).

The spelling of 1020331542 in words is "one billion, twenty million, three hundred thirty-one thousand, five hundred forty-two".