4061221542 has 24 divisors (see below), whose sum is σ = 10056358416. Its totient is φ = 1160348976.

The previous prime is 4061221531. The next prime is 4061221553. The reversal of 4061221542 is 2451221604.

4061221542 is a `hidden beast` number, since 4 + 0 + 612 + 2 + 1 + 5 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (4061221531) and next prime (4061221553).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16115833 + ... + 16116084.

It is an arithmetic number, because the mean of its divisors is an integer number (419014934).

Almost surely, 2^4061221542 is an apocalyptic number.

4061221542 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

4061221542 is an abundant number, since it is smaller than the sum of its proper divisors (5995136874).

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

4061221542 is a wasteful number, since it uses less digits than its factorization.

4061221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32231932 (or 32231929 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 4061221542 is about 63727.7140810809. The cubic root of 4061221542 is about 1595.4586773861.

The spelling of 4061221542 in words is "four billion, sixty-one million, two hundred twenty-one thousand, five hundred forty-two".