4020542155 has 8 divisors (see below), whose sum is σ = 5513886432. Its totient is φ = 2756943168.

The previous prime is 4020542153. The next prime is 4020542171. The reversal of 4020542155 is 5512450204.

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

It is not a de Polignac number, because 4020542155 - 2¹ = 4020542153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020542153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57436282 + ... + 57436351.

It is an arithmetic number, because the mean of its divisors is an integer number (689235804).

Almost surely, 2^4020542155 is an apocalyptic number.

4020542155 is a deficient number, since it is larger than the sum of its proper divisors (1493344277).

4020542155 is a wasteful number, since it uses less digits than its factorization.

4020542155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114872645.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 4020542155 is about 63407.7452287968. The cubic root of 4020542155 is about 1590.1137999848.

Adding to 4020542155 its reverse (5512450204), we get a palindrome (9532992359).

The spelling of 4020542155 in words is "four billion, twenty million, five hundred forty-two thousand, one hundred fifty-five".