1020401442 has 32 divisors (see below), whose sum is σ = 2273261760. Its totient is φ = 339278400.

The previous prime is 1020401407. The next prime is 1020401461. The reversal of 1020401442 is 2441040201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1908 + ... + 45215.

It is an arithmetic number, because the mean of its divisors is an integer number (71039430).

Almost surely, 2^1020401442 is an apocalyptic number.

1020401442 is an abundant number, since it is smaller than the sum of its proper divisors (1252860318).

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

1020401442 is a wasteful number, since it uses less digits than its factorization.

1020401442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47535 (or 47529 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1020401442 is about 31943.7230453809. The cubic root of 1020401442 is about 1006.7547512697.

Adding to 1020401442 its reverse (2441040201), we get a palindrome (3461441643).

The spelling of 1020401442 in words is "one billion, twenty million, four hundred one thousand, four hundred forty-two".