1542721022 has 16 divisors (see below), whose sum is σ = 2393550432. Its totient is φ = 745236480.

The previous prime is 1542721009. The next prime is 1542721043. The reversal of 1542721022 is 2201272451.

It is a junction number, because it is equal to n+sod(n) for n = 1542720982 and 1542721000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82883 + ... + 99774.

It is an arithmetic number, because the mean of its divisors is an integer number (149596902).

Almost surely, 2^1542721022 is an apocalyptic number.

1542721022 is a deficient number, since it is larger than the sum of its proper divisors (850829410).

1542721022 is a wasteful number, since it uses less digits than its factorization.

1542721022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182803.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 1542721022 is about 39277.4874705600. The cubic root of 1542721022 is about 1155.4800880195.

Adding to 1542721022 its reverse (2201272451), we get a palindrome (3743993473).

The spelling of 1542721022 in words is "one billion, five hundred forty-two million, seven hundred twenty-one thousand, twenty-two".