1021430542 has 8 divisors (see below), whose sum is σ = 1671431832. Its totient is φ = 464286600.

The previous prime is 1021430537. The next prime is 1021430551. The reversal of 1021430542 is 2450341201.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 46428661 = 1021430542 / (1 + 0 + 2 + 1 + 4 + 3 + 0 + 5 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23214309 + ... + 23214352.

It is an arithmetic number, because the mean of its divisors is an integer number (208928979).

Almost surely, 2^1021430542 is an apocalyptic number.

1021430542 is a deficient number, since it is larger than the sum of its proper divisors (650001290).

1021430542 is a wasteful number, since it uses less digits than its factorization.

1021430542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46428674.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1021430542 is about 31959.8270020349. The cubic root of 1021430542 is about 1007.0930832152.

Adding to 1021430542 its reverse (2450341201), we get a palindrome (3471771743).

The spelling of 1021430542 in words is "one billion, twenty-one million, four hundred thirty thousand, five hundred forty-two".