1621060042 has 48 divisors (see below), whose sum is σ = 2885604480. Its totient is φ = 680847552.

The previous prime is 1621060037. The next prime is 1621060043. The reversal of 1621060042 is 2400601261.

It is a junction number, because it is equal to n+sod(n) for n = 1621059995 and 1621060022.

It is not an unprimeable number, because it can be changed into a prime (1621060043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1568758 + ... + 1569790.

It is an arithmetic number, because the mean of its divisors is an integer number (60116760).

Almost surely, 2^1621060042 is an apocalyptic number.

1621060042 is a deficient number, since it is larger than the sum of its proper divisors (1264544438).

1621060042 is a wasteful number, since it uses less digits than its factorization.

1621060042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1621060042 is about 40262.3899191292. The cubic root of 1621060042 is about 1174.7164046525.

The spelling of 1621060042 in words is "one billion, six hundred twenty-one million, sixty thousand, forty-two".