1020354542 has 4 divisors (see below), whose sum is σ = 1530531816. Its totient is φ = 510177270.

The previous prime is 1020354539. The next prime is 1020354551. The reversal of 1020354542 is 2454530201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1020354542² = 2082246782760059528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255088634 + ... + 255088637.

It is an arithmetic number, because the mean of its divisors is an integer number (382632954).

Almost surely, 2^1020354542 is an apocalyptic number.

1020354542 is a deficient number, since it is larger than the sum of its proper divisors (510177274).

1020354542 is an equidigital number, since it uses as much as digits as its factorization.

1020354542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510177273.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1020354542 is about 31942.9889334107. The cubic root of 1020354542 is about 1006.7393267778.

Adding to 1020354542 its reverse (2454530201), we get a palindrome (3474884743).

The spelling of 1020354542 in words is "one billion, twenty million, three hundred fifty-four thousand, five hundred forty-two".